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TRADES/APPRENTICESHIP EXAMS MATH + READING STUDY GUIDES NAME: ____________________ DATE: _____________________ Apprenticeship Program: ____________________ Sponsor teacher: __________________________ Date of Apprenticeship start: _________________ THE EXAMS . . . You will be writing 2 exams at the one sitting. You will be given a Reading Section that has a time limit of 45 minutes and a Math Section that is also 45 minutes, a total of 1.5 hours. CALCULATORS ARE NOT PERMITTED. The exams are multiple choice and you will CIRCLE the correct answer on the sheet provided. Do not mark the test booklets. If you have a Learning Disability in Math or Reading, the only adjudication service that will provide is extra time. THE STUDY GUIDES . . . READING The Reading Exam measures comprehension. It is not a hard exam, but you may be pressed for completion – keep in mind that you are asked 48 questions and you have 45 minutes to complete the test. The Directions ask you to read a passage and then answer a question about the passage. It is a multiple choice exam so you will choose the best answer to each question. The passages will be in several different formats: there are the “Ad” style and “Label” style reading passages in which you will be required to scan and find the correct answer. There are short informational passages where you can re-read and then find the right answers. You will be asked factual questions as well as inferential questions where you will “read between the lines” and make a judgmental choice. There is a poetry selection where you will be asked what the poem is about. You do not need to know the literary devices that you learned in school. In all of these passages you are reading for understanding. The best advice is to place yourself and use the whole 45 minutes given for the test. In the practice guide you are given some passages to read and then to answer. Be confident! Practice pays off! MATH The guide has been organized into different components. Each component has been explained in easy to follow steps with practice questions at the end of each component. Remember not to use a calculator. After completing all the components, proceed to the practice exams. Practice, practice, practice. Re-learn then memorize your times-division tables. Not using a calculator will mean more review for you until you get in stride. Once you master these operations you will do well! Be confident! Practice pays off! 2 READING COMPREHENSION The following is test from a science journal. Objects that are moving on a rotating disk or sphere tend to be deflected from motion in a straight line by the Coriolis force. For instance, objects which move northward or southward from the equator of the Earth tend to be deflected eastward by the Coriolis force. The force can generate very complex circulation patterns in atmospheres of planets which rotate very quickly. On the other hand, the Coriolis force does not complicate the atmospheric circulation of planets like Venus which rotate very slowly. 1. Venus will not have atmosphere because: a) b) c) d) 2. complex circulation pattern within its is a hot planet has a ring around it rotates very slowly is not a complex plant What is this text mainly about? a) b) c) d) 3. It It It It a Venus Objects which move northward or southward Coriolis force Atmosphere When are moving objects affected by the Coriolis force? a) b) c) d) When they are on Venus When they are moving on a rotating object When they are round They are never affected by this force. 3 The following is a text from W.B. Yates – The Collected Poems The following is an editorial by Rob Walker – Disney’s RePurpose in Life The Empty Cup By W.B. Yates Everybody loves to pick on cable companies, and the easiest target is usually whoever your local provider is – Time Warner, Cox, Comcast, and so on. People tend not to get annoyed with the “content” firms like Disney, which generally strike a public pose of being at the mercy of the distribution meanies. In fact, Disney has a tremendous amount of power over what choices are available over a given cable system. A crazy man that found a cup, When all but dead of thirst. Hardly dared to wet his mouth Imagining, moon-accursed, That another mouthful And his beating heart would burst. October last I found it too But found it dry as bone, And for that reason am I crazed And my sleep is gone. 4. In line a) b) c) d) 4, what is “accursed” A dusty moon A bone Being under a curse I don’t know 5. In line 8 “dry as a bone” refers to: a) Boneless b) Dry cup c) Full of bones d) I don’t know 6. The editor is writing from the point of view of a: a) Consumer b) Analyst c) Sport fan d) Teacher 7. In comparison with cable companies how is Disney seen? a) Like a meanie b) Like an annoyance to consumers c) Like an okay company d) Like a money monolith ANSWERS 1. c 2. c 3. b 4. c 5. b 6. a 7. c 4 QUESTIONS: Circle the correct answer 1. What must you add before you heat the soup? a) 1 can of milk b) 1 can of water c) Nothing 2. Net wt. is the weight of; a) Can plus food b) Food only 3. Tomatoes make Ethan sick. Read the list of ingredients in the soup above. Can Ethan eat this soup? a) Yes b) No 4. Marge wants to keep down the number of calories she eats. Which is better for her? a) ½ cup of peas, about 30 calories b) A serving of Morgan’s Chicken Gumbo (Find the calories under Nutrition information and compare. 5. How many ounces of soup are in the can on the last page? ______________ ounces 5 6. UNIT PRICE LABELS are sometimes on shelves under the food. They help you compare prices. Look at the unit price labels at the right. For 1 pound of soup, which brand costs less? a) Atlas b) Morgan’s 7. Which orange drink has more orange juice in it? a) Elmo’s b) Sunny’s 8. Sometimes milk is stamped with a date. The store shouldn’t sell the milk after that date. The later the date, the fresher the milk. Which milk do you think is fresher? a) Dec 14 b) Dec 17 9. This chicken pie thawed when the electricity went off. Now the electricity is fixed. What should you do with the pie? a) Eat is tonight for dinner b) Put it back in the freezer 10. What can’t you do with this fish? a) Cook it right away b) Leave it on the table overnight c) Put it in the refrigerator 6 QUESTIONS: 1. Wish detergent may hurt your; a) Eyes b) Skin 2. How much Wish goes into each of these washing machines? Write your answer above each picture. 3. Sani-Sink fixes stopped up sinks. The label says POISON. Which should you be more careful with? a) Sani-Sink b) Wish 7 4. To get the top off this can; a) Squeeze, pull, and twist b) Turn left and unscrew 5. This spray is not food for: a) Ants b) Flies c) Roaches 6. The Cautions at the right are numbered. Write the numbers below to show what each Caution means. (The first one is done for you.) __6__ Catches fire easily _____ Be sure there is a lot of fresh air _____ Don’t breath product _____ Don’t throw empty can in garbage to be burned _____ Lock it up when not using it _____ Try not to get it on skin _____ If swallowed, see a doctor right away. 8 QUESTIONS; 1. The shirt on Page 10 is red. Can you wash it with your white sheets? a) Yes b) No 2. COLORFAST is on the label of another red shirt. If you wash it with your white sheets will they turn pink? a) b) 3. Which pair of pants is more likely to need ironing? a) 1 b) 2 4. Which pair of pants will probably look worse if you let them out at the bottom. a) 1 b) 2 5. Which jacket will keep water out even in a heavy storm? a) 1 b) 2 6. How a) b) c) 7. Which shirt will probably shrink the most? a) 1 b) 2 c) 3 8. Which shirt will probably shrink the least? a) 1 b) 2 c) 3 9. Which shirt is largest? a) 1 b) 2 c) 3 10. Which shirt was made in America? a) 1 b) 2 c) 3 Yes No can you clean Jacket 1? at the dry cleaners in a washing machine by hand 9 THE STORY OF AIRCRAFT Man Invents the Balloon. The first balloon was invented by Jacques and Joseph Montgolfier in 1783. Their father was a paperdealer who lived near Paris. Whenever there was wastepaper to be destroyed, he would have it burned. The brothers used to watch the smoke rise into the air from the fires. It occurred to them that if they could capture the smoke in a bag, the smoke would make the bag rise into the air and fly. On June 5, 1783, they placed a huge linen bag several feet above a pile of straw and set fire to the straw. When the bag had filled with smoke and hot air, they cut the ropes that held it down. It rose into the sky. On this first flight it traveled 1 ½ miles in 10 minutes. This first flight created a sensation, and even the King heard about it. He asked the Montgolfier brothers to prepare a balloon so that he could watch a flight. The First Man Goes Up in a Balloon. After the Montgolfiers had experimented by sending a balloon up with some animals, people began to wonder if a man could go up in a balloon. The King’s historian, a man named de Rozier, volunteered to go up in a balloon. A pan of burning coals was placed in a big basket under the balloon to feed it hot air, and de Rosier went up! He remained aloft 4 ½ minutes and went as high as 80 feet. He proved that man could fly in balloons! Man Learns How to Steer Balloons. The next step in the progress of aircraft was the invention of a way to steer balloons. The round balloons you have been reading about just drifted along wherever the wind carried them. In their first attempt to steer balloons, men took along oars and tried to row the big gas bags floating in air, much as you would row a boat floating on a lake. The method, however, didn’t work. Finally, a propeller driven by an engine was attached to the basket of a balloon. Once this was done, man found that he could steer a balloon and travel from place to place in the ocean of air that surround us. Balloons Begin to Use Hydrogen. These flights were followed by an immediate improvement in balloons. Another Frenchman, a scientist named J. A. Charles, knew that balloons rise because the hot air in them weighs less than the cooler air outside. He also knew that hydrogen gas weighs less than air. He decided to fill a silk balloon with hydrogen. This kind of balloon could stay in the air much longer than hot-air balloons. It 10 didn’t burn coal, and it was not affected by air temperature. Charles’s balloon is also famous because when it landed after its first flight, it came down in a place where people didn’t know about balloons. They thought it was a monster. It frightened them so much that they destroyed it. Airplanes Replace Balloons. More than 100 years passed before the first successful airplane took place. On December 19, 1903, the Wright brothers went up in the first heavier-than-air plane at Kitty Hawk, North Carolina. Planes quickly replaced balloons. They could fly in all kinds of weather, carry heavy loads, and go long distances. Space Rockets Are Here. In 1926, only 23 years after the Wrights’ first plane, the first workable liquid-fuel rocket was developed by Robert H. Goddard. Today, rockets have been built that not only fly from continent to continent, but are also sent around the earth, to the moon, and even to some planets. Very soon, men will leave the earth and start on a great exploration of the solar system. Underline the word or phrase under each sentence that should go in the blank space in the sentence. 1. The first balloon was invented by _____________. a) Charles b) Goddard c) The Montgolfiers 2. The first balloon was sent up in ___________________. a) 1903 b) 1783 c) 1926 3. The first balloon flight lasted _____________________. a) 1 minutes b) 4 ½ minutes c) 10 minutes 4. The first man to go up in a balloon was _____________. a) Charles b) Montgolfier c) De Rozier 5. The gas first used for lifting balloons was ____________. a) hot air b) oxygen c) hydrogen 6. The first way that man tried to steer balloons was by using ________________. a) oxygen b) ropes c) oars 7. Men were finally able to steer balloons by using ________. a) hydrogen b) propeller-driven engine c) oars 11 8. The airplane was invented by _________________. a) Charles b) The Wright brothers c) Goddard 9. The first airplane was flown at ________________. a) Paris b) London c) Kitty Hawk 10. The first airplane flight was in _______________. a) 1803 b) 19903 c) 1926 11. The first liquid-fuel rocket was invented in __________. a) 1726 b) 1826 c) 1926 12. The liquid-fuel rocket was invented by _____________. a) de Rozier b) Charles c) Goddard 12 YOUNG VIKING SAILOR A blow from a rough hand sent Thorfin spinning across the beach. Slowly the boy rose to his feet and stood facing Magnus, the gigantic red-bearded sailor who had struck him. Magnus scowled at the boy, at the stout oaken galley being prepared for her voyage, and at the stone houses edging the sparkling cove in Greenland. “You’re no sailor,” Magnus said scornfully. Shaking his head, he said, “You belong in the fields. Aye, Leif must be crazy to begin a voyage with the likes of a farmer’s boy.” “I am a sailor,” replied Thorfin angrily, “or I will be by the time we return.” “If we return,” sneered Magnus. “I was a fool to come on this voyage. Who knows what dangers lie ahead? Leif Ericson is headstrong and proud, like his father, Eric the Red. He will have us all killed just so he can prove there is land across this dark sea.” As the coast of Greenland faded from view the next day, Thorfin watched the oarsmen pull the dragon ship swiftly toward the west. Some day, he thought, he would be a sailor too – a real sailor. He was grateful to the mighty Leif for taking him along, although he knew he would only be mending badly torn nets. Thinking of his job suddenly reminded Thorfin that there was work to do. He awoke from his daydreams with a start. He would show them how good a sailor he could be! That night, after he could no longer see well enough to work, Thorfin stood beside the prow. “A calm night,” said a voice coming out of the darkness. Thorfin peered into the half-light and made out the figure of a tall man. It was the captain! “Aye, a calm night, sir,” Thorfin replied. “The sun set red. It should be fair in the morning. “So our boy is a sailor!” Leif’s laughter sounded out over the entire one-hundred-foot length of the ship. “It’s all right, boy,” he said, patting Thorfin on the back. “You will be a good sailor!” “Thank you, sir,” said Thorfin quietly. “But there is so much I do not know. There is so much I have to learn.” “You can learn now,” Lief said. Thorfin listened carefully as the great Viking hero pointed to the North Star. “Yonder is the mariner’s friend. When the sun does not shine during the day, we rely on the North Star at night to give us our direction. Right now we are going westward.” “And what lies there, sir?” Thorfin asked eagerly. “I do not know. But of this I am sure. There is a land there. A land that no Northman has seen before. Thorfin nodded his head. If Lief Ericson, the most skillful sailor is all of Norway and Greenland, believed in this unknown land, that was good enough for him! The days that followed were thrilling ones for Thorfin. First had come the excitement when they 13 sighted the land with forests. This probably was the country we now know as Labrador. Then a fierce gale sprang up from the north. It filled the ship’s one sail and sent the little wooden boat skimming southward far away from the land that they had seen. Huge waves crashed down on them and shook the tiny ship from bow to stern. Thorfin had not minded the storm, but oh how upset he was the first time he saw porpoises! “Look!” he shouted fearfully. “There are sea serpents alongside the ship!” How Magnus and the others laughed! “I said you would never be a sailor!” Magnus snarled. Thorfin’s ears burned all that day. Yet is was Thorfin, ever watchful, who first spotted the birds and the seaweed which were the evidence that the ship was nearing land. Leif himself praised the boy. Thorfin, reddening with pride, made up his mind that he would not close his eyes until he saw land. The hours that followed were long and trying. Thorfin tried very hard to stay awake but at last sleep closed his eyelids. When he awoke, it was to find the ship gliding into a pleasant cove. “What happened?” he cried. Then he remembered. He had planned to stay awake like a good sailor, but he had failed. Tears fell from his eyes. “Ah, Thorfin,” said Leif, “you weep? And no wonder. Tears of joy should be yours for was it not you who saw the birds and the seaweed? You are a good sailor, Thorfin. Come, I am taking you with me to explore the new land. Magnus scowled, but the others patted Thorfin in a friendly was as he walked proudly between the rowing benches at the great Viking’s side. Thorfin no longer cared what Magnus thought. It was good enough to know that Leif had called him a good sailor and that he was about to set foot onto this unknown land. Five hundred years later, men would call this land America! FACT QUESTIONS Underline the right answer to each of the questions below; 1. From what country did Leif’s ships sail? a) England b) Russia c) Greenland 2. Who was Leif Ericson’s father? a) Magnus b) Eric the Red c) Columbus 3. What was Thorfin’s job on the ship? a) new mender b) lookout c) oarsman 4. What gave Leif his direction at night? a) a c compass b) a magnet c) the North Star sailing 14 5. Thorfin mistook these animals for sea serpents: a) whales b) sharks c) porpoises 6. The first person to see birds and seaweed was: a) Thorfin b) Magnus c) Leif 7. The country where Leif and his men landed was later called; a) Alaska b) America c) Canada 4. Was Thorfin faithful to his work? ________________________ ________________________ 5. Why did Leif laugh at what Thorfin said when they were standing together at the prow of the boat? ________________________ ________________________ ________________________ ________________________ ________________________ 6. Do you think Leif Ericson was wise to make a trip into the unknown? ______________ Why? ___________________ ________________________ ________________________ ________________________ ________________________ 7. Compare Thorfin with Norman Muscarello. Which one deserves more credit for seeing something important. ________________________ Why? __________________ ________________________ ________________________ ________________________ ________________________ THOUGHT QUESTIONS 1. Why did Magnus hit Thorfin? ________________________ ________________________ 2. Why did Magnus say he was a fool to go on this trip? ________________________ ________________________ 3. Do you think Thorfin appreciated Leif’s taking him along? _________________. What proof have you? ________________________ _______________________ 15 BLESSINGS RAINTREE* FROM THE José watched the dark clouds as they formed across the valley. “The raintree is gathering more water for us,” he thought happily. José and his pretty little sister, Maria, lived with their parents on the island of Ferro. It is the farthest west of the Canary Islands, a small volcanic speck in the sea. There are no rivers or lakes in the fields and hills of black lava, so rain must be stored in tanks cut in the volcanic rock. The people of Ferro were proud of their famous raintree, which gave the seed pods for their cattle and fresh water when they needed it. Every day José and Maria carried jugs of water from the raintree. Their path twisted along the fig orchard s of Señor Rafael. The Señor was a wealthy man who was not too friendly with his neighbors. One morning he met them on the path. “My little girl is sick,” he said anxiously. “She is burning with fever and must be bathed in cool water many times a day. Will you bring water from the wonderful raintree to my home?” “Gladly, Señor,” José answered. “Good,” the Señor sighed in relief. “I will leave my water jug with you.” José and Maria climbed higher and higher up the steep hill until the cloud mist felt cold upon their faces. At last they reached the huge raintree, standing all alone. Moisture dripped from its thick dark leaves and fell in a cistern, which men of long ago had carved in the hard lava. José set Señor Rafael’s beautiful jug under the low-lying branches beside his own plain one. As he filled the jugs, his little pet goat, Poco, came prancing up the path. “Go away from here, Poco!” Maria call. “You always make trouble.” “Let him come,” said José. “Poco only wants a drink from the raintree, too.” “What if he breaks Señor Rafael’s jug?” “Don’t worry, I will watch him,” José replied. But just as José finished filling Señor Rafael’s jug, Poco came up behind him and gave him a playful butt. José stumbled and felt the jug slip from his hands. He watched in horror as it rolled down the rocky path. “Catch it, Maria!” he shouted. Just in time, she kept it from smashing on a huge rock. José rushed down the path, picked up the jug, and saw that it was crocked from top to bottom. “I knew this would happen,” Maria sobbed. José was worried until he remembered how clever his mother was at mending broken pottery. There was no time to take it to her now, however, for they must hurry with the water for the sick child. José had an idea. Stripping off his shirt, he tied it around the cracked clay jar. “Maybe I can squeeze the crack together,” he said. But when he 16 poured some water in the jug, it seeped right through, wetting the cloth. Suddenly they heard a branch snap. “Now Poco is after Señor Rafael’s figs,” cried Maria. “More trouble,” José thought as he jerked Poco away from the tree. Then he stopped and stared at the fig leaves. “I knew the blessed saints would help me!” he said. Quickly he gathered a handful of leaves and put a layer of them over the crack on the inside of the jug. When he poured more water in it, the water pressed the leaves tightly against the jug. It held! When the jug again was full, José carefully carried it to the home of Señor Rafael. José was tempted to say nothing to the Señor about having cracked his jug, but he reminded himself that this would not be honest. So he told what had happened. Don’t worry,” Señor Rafael reassured him. “Accidents will happen. I can use a smart boy like you. Would you be willing to bring water every day for my child until she is well?” “Yes, Señor. And I know my mother can mend your jug so it will be as good as new.” “Take it to her, then,” he said. “But first, please bring more water from the raintree.” José carried their own large jug filled with water to the Señor’s home. Then he took the cracked jug to his mother, who gladly mended it. The Señor paid José for carrying water. When his child was well, he invited José’s family to his home for dinner. “We must be friends as well as neighbors,” he said. “You see, José, sometimes accidents bring unlooked-for blessing.” *Adapted from a story prepared for this book by Olive Rambo Cook and Margaret Allison Johnson. FACT QUESTIONS Underline the word or phrase that best completes each of the following sentences. 1. Raintrees are found in; a) Japan b) Africa c) The Canary Islands 2. The raintree gets its water from: a) a spring b) clouds c) a lake 3. The island in the story was named: a) Ferro b) Haiti c) Black Island 4. The island has: a) rivers b) lakes c) hills of black lava 17 5. 6. The path to the raintree passed; a) desert b) Señor Rafael’s fig trees c) Pastures 1. Would you have consented to bring water for Señor Rafael, even though he had always been unfriendly to you in the past? ___________________ Why? ___________________ ________________________ ________________________ ________________________ 2. If you had been José, what would you have done when you saw that the jug was cracked? ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ 3. If you had been José, would you have told Señor Rafael that you had broke the jug? ________________________ Why? ___________________ ________________________ ________________________ ________________________ ________________________ 4. What did Señor Rafael mean when he said, “Sometimes accidents bring unlooked-for blessings?” ________________________ ________________________ ________________________ ________________________ ________________________ Señor Rafael’s attitude toward neighbors had been; a) kind b) unfriendly c) generous 7. The one who was to blame for breaking the jug was; a) Maria b) José c) Poco 8. José covered the crack in the jug with; a) cabbage leaves b) fig leave c) raintree leaves 9. THOUGHT QUESTIONS José had the broken mended by; a) Señor Rafael b) His mother c) A servant 10. Señor Rafael invited family to: a) his fig orchard b) his garden c) his home jug José 18 5. On a separate piece of paper, write a short paragraph telling how you think this story might have ended if Maria had had her way in sending Poco home. 19 Study Package – Math The following package has been organized into different components. Each component has been explained in easy to follow steps with practice questions at the end of each component. After completing all the components the student should try all the practice tests at the end of the booklet. Remember, there are no calculators allowed on the exam, so the student should do this booklet without a calculator as well. PLACE VALUE 4 3 2 . Example: 432.567 The 2 is in the The 3 is in the The 4 is in the To the right of The 5 is in the The 6 is in the The 7 is in the ones place. tens place. hundreds place the decimal place… tenths place. hundredths place. thousandths place. H U N D R E D S T E N T H S O E N E S D D E C I M A L P O I N T 5 6 7 T E N T H S H U N D R E D T H S T H O U S A N D T H S T E N T H O U S A N D T H S H U N D R E D T H O U S A N D T H S M I L L O N T H S The number is read as: “Four hundred thirty-two and five hundred sixty seven thousandths.” ROUNDING: 1. Round 67.1275 to the nearest tenth = 2. Round 67.1275 to the nearest hundredth = 3. Round 67.1275 to the nearest thousandth = 4. Round 67.1275 to the nearest tens = 5. Round 67.1275 to the nearest ones = PLACE VALUE, SHOW: 1. three thousandths = 2. fifty-seven ten thousandths = 3. two and one tenth = 4. thirty tens = 5. 23 hundredths = 20 BASIC OPERATIONS: ADDITION Line up the numbers according to the place value and add vertically from right to left. Example: 35647 + 64537 + 235 1 1 1 1 Example: 54.78 + 3.660 1 1 3 5 6 4 7 6 4 5 3 7 + 2 3 5 1 0 0 4 1 9 5 4 + 3 5 8 1 . . . 7 8 0 6 6 0 4 4 0 SOLVE: 1. 477.075 + 64 + 709.999 = 2. 37.2 + 26.555 + 64 = 3. 206.25 + 1.0026 + 0.6009 = 4. 125.345 + 1654 + 2.12 = 5. 7.0036 + 5.24 + 0.00089 = SUBTRACTION Line-up the numbers according to place value and subtract vertically from right to left. Example: 8 4 7 - 2 5 8 2 1 borrow 5 8 6 5 6 9 5 4 . - 3 . 5 1 . 7 8 0 6 6 0 1 2 0 SOLVE: 1. 2. 3. 4. 5. 7986 – 1039 = 897.2333 – 129.345 = 786.33 – 291.003 = 189.303 – 6.79 = 400.36 – 126.002 = 21 MULTIPLICATION Place one number above the other so that the hundred’s, tenths, and one’s places are lined up. Draw a line under the bottom number. 45036 X 12 Multiply the furthest number to the right through every number on the top. 1 1 45036 X 12 90072 The cross off the 2 and place a 0 at the bottom of the one’s column. 45036 X 12 90072 0 Then multiply the next number through all the top numbers. 45036 X 12 1 90072 +450360 add both lines together 540432 If there is a decimal in the question, count how many decimal places there are in the question and move the decimal that many places from the left. 450.36 – there are two decimal places X 1.2 – there is one decimal place 90072 +450360 -- add both lines together 540.432 – there will be three decimal places in the answer SOLVE: 22 1. 183 x 152 = 2. 1985 x 230 = 3. 0.25 x 0.375 = 4. 45.230 x 0.36 = 5. 75.2 x 1.3 = DIVISION 425 ÷ 25 = 17 Dividend ÷Divisor = Quotient - The number to be divided into is known as the dividend (425 from above) The number which divides the other number is known as the divisor (25 from above) Quotient Divisor Divident 17 25 425 0 See if the divisor will go into the first number – 25 425 (25 does not go into 4) See if the divisor will go into the first and second number combined; 01 25 425 (25 goes into 42 once) Subtract 42 from 25 and apply the remainder to the next number Now divide 25 into the new number, 175 and place it up top − 25 ↓ 17 5 _017_ 25)425 − 25 ↓ 175 175 0 When your remainder is 0, then you have completed the question and the answer is 17. SOLVE: 1. 14 294 23 2. 16 256 3. 125 3375 4. 162 2916 5. 72 2448 DIVISION WITH DECIMALS When dividing decimals, remove the decimal from the divisor. What you do to the divisor, you must apply it to the dividend. 0.34 912 → 034 91200 (to remove the decimal, move the decimal 2 places to the right on the divisor, therefore move the decimal 2 places to the right on the dividend and fill in those places with 0’s). Then divide. SOLVE; 1. 3.2 6452 = 2. 4.75 3325 = 3. 18.5 231.25 = 4. 67.2 ÷ 0.24 = 5. 481.92 ÷ 0.024 = 24 NEGATIVE AND POSITIVE QUANTITIES Negative numbers mean that they are below zero. -5 | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 | Rules to determine (-) or (+) Adding negative numbers – A negative plus a negative will be negative ex. (-5) + (-6) = -11 A negative plus a positive will be which ever one is a higher number ex. (-9) + (6) = -3 (13) + (-6) = 7 Subtracting negative numbers – 2 negatives together make a positive ex. 7 – (-5), the five becomes positive 7 + 5 = 12 A negative subtract a number will be negative ex. -8 – 4 = -12 Multiplying negative numbers – A negative times a positive will be negative ex. 8 x (-3) = -24. A negative times a negative will be a positive ex. (-5) x (-3) = 15 SOLVE; 1. (-1) + 2 = 2. (-3) – (-4) = 3. (-9) + (-10) = 4. (-6) x 4 = 5. (-7) x (-3) = 25 EXPONENTS 3 – exponent 8 The exponent tells you how many times to multiply, and the 8 tells you what number to multiply. This means 8 multiplied by itself 3 times. 8 x 8 x 8 = 512 If the exponent is zero or the number is zero, then the answer will be zero. SOLVE: 1. 73 2. 35 3. 82 4. 26 5. 63 MULTIPLYING AND DIVIDING EXPONENTS (3+5) A3 x A5 = Add the exponents A8 (6-4) B6 x B4 = Subtract the exponents B2 SOLVE: 1. X3 x X3 = 2. R6 x R9 = 3. Y4 ÷ Y1 = 4. Z8 ÷ Z5 = 5. B6 x B3 = 26 SQUARE ROOTS A square root ( 25 ) undoes squaring (52). 5 x 5 = 25 25 = 5 SOLVE: 1. 81 2. 36 3. 16 4. 49 5. 144 POWERS OF 10 102 x 104 = Using the same exponent rules as above = 106 = 1,000,000 (the exponent represents the number of zeros) SOLVE: 1. 105 2. 102 3. 104 x 102 = 4. 109 x 103 = 5. 107 ÷ 103 = SCIENTIFIC NOTATION Scientific Notation is always written as: number x a power of 10 3.42 x 105 = Using the power of 10 rules from above; The exponent represents the number of places to move the decimal. 105 = 100 000 The decimal must move 5 places to the right. 3.42 = 342 000 SOLVE: 1. 4.56 x 103 2. 4.7 x 105 3. 38.05 x 106 4. 25.003 x 102 5. 7.92 x 105 27 CONVERTING BETWEEN PERCENTAGE AND DECIMAL Percentage means “per 100”, so 50% means 50 per 100, or simply 50 If you divide 50 by 100 you get 0.5 (a decimal number). 100 . So, to convert from percentage to decimal: divide by 100 (and remove the “ 0 ” sign). 0 The easiest way to divide by 100 is to move the decimal point 2 places to the left. So: 75% 0.7.5. 0.75 Move 2 places to the left Move the decimal point 2 places to the left, and remove the “ 0 ” sign. 0 Change the percent to a decimal; SOLVE; 1. 45% 2. 65% 3. 125% 4. 33% 5. 20% Change the decimal to a percent; SOLVE; 1. 0.65 2. 0.45 3. 0.33 4. 0.025 5. 0.80 28 PERCENTAGES For all percentage questions use the “is over of” method. % is = (percent is always out of 100) 100 of What is 30% of 75? Is = ? is of Of = 75 75 x 30 = 100(?) = 2250 = 100(?) = % = 30 out of 100 ? = 22.5 ? 30 = = cross multiply 75 100 2250 100(?) = 100 100 18 is 24% of what number? Is = 18 is of Of = ? 18 x 100 = 24 (?) = 1800 = 24(?) = 18 24 = = cross multiply ? 100 1800 24(?) = 100 24 What percent is 41 out of 93? Is = 41 is of Of = 93 14 x 100 = 93(%) = 1400 = 93(%) = %=? % = 15.0537 = 15% 14 % = = cross multiply 93 100 1400 93(%) = 93 93 SOLVE: 1. What is 12% of 240? 2. What is 60% of 350? 3. 15 is 50% of what number? 4. 26 is 50% of what number? 5. What percent is 35 out of 105? 6. What percent is 60 out of 135? 29 A FRACTION TO A PERCENTAGE Use the “is over of” method is of 1 % = *percent is always out of 100 100 4 Cross multiply to solve for x. 1(100) = 4(x) Get x by itself – 100 = 4x (what you do to one side you must do to the other) 4 100 4x = 4 4 X = 25 add the percent 1 = 25% 4 Convert the fraction into a percent SOLVE; 1. 1 5 2. 22 88 3. 15 90 4. 2 3 5. 6 20 30 CONVERTING A PERCENT TO A FRACTION Put the percent into a fraction-percent is always out of 100 and reduce 35% = 35 To reduce, find a number that goes into both numbers evenly 100 Rules to reduce: First try: if top can be divided evenly into the bottom ex 1 36(÷36) = 2 72(÷36) Second try: if both are even divide by 2 (ends in 0,2,4,6,8) Third try: if both end in 5 or a 0 then divide by 5 SOLVE: 1. 75% 2. 60% 3. 88% 4. 15% 5. 124% 31 A FRACTION TO A DECIMAL The fraction bar (between the numbers) means divide. Divide the denominator (the bottom part into the numerator (the top part): 1 = 1.00 ÷ 4.00 = 4 0.25 4 1.00 − 0 ↓↓ 10 8 20 − 20 0 Change the fraction to a decimal. (to 3 decimal places) SOLVE: 1. 1 5 2. 1 7 3. 2 7 4. 4 9 5. 1 8 6. 5 12 32 DECIMAL TO A FRACTION 0.0625 Put the number within the decimal on the top of a fraction – 0.0625 625 10000 The bottom number will start with a 1 and then count the number of spaces after the decimal and replace those with zeros. Reduce to lowest terms. 625 ÷ 625 = 1 1000 ÷ 625 16 SOLVE: 1. 0.75 2. 0.1875 3. 0.65 4. 0.036 5. 0.092 33 ORDER OF OPERATIONS BEDMAS B = Brackets E = Exponents D = Division M = Multiplication A = Addition S = Subtraction This is the order of which you would solve a question that has more than one operation. Starting from the top, do brackets first, followed by exponents, then division, multiplication, addition and subtraction. Example (21 + 2) + 7 x 2 = y 8 Brackets – 21 + 3 = 24 24 + 7 x 2 = y 8 Exponents – there are no exponents, so move on to the next operation Division – 24 ÷ 8 = 3 3+7x2=y Multiplicaton – 7 x 2 = 14 3 + 14 = y Addition – 3 + 14 = 17 3 + 14 = y Subtraction – there is no subtraction The solution is y = 17 SOLVE; 1. 36 ÷ 6 X 3 – 2 = 2. 14 + 2 (5-3) = 3. 32 – 22 + 3 X 2 = 4. 14 (5-3) + 5 X 2 = 5. 6−4+8 = 5 − 15 6. 3 X 8 ÷6 + 6 ÷ 3 X 2 = 7. 18 – 32 + 4 X 3 = 34 SOLVING EQUATIONS When solving an equation, you are always trying to get the variable by itself. Solve for n: 4n – 5 = 3 get n by itself on one side of the equation and move everything else to the other side. Add 5 to both sides of the equation to eliminate the (-5) 4n-5 (+5) = 3 (÷5) 4n = 8 Now divide both sides by 4 to eliminate the 4 4n 8 = 4 4 n=2 SOLVE FOR N: 1. 3n – 4 = 17 2. 9 + 2n = 23 3. 11n = 8 = 14 4. 45 = 3n + 15 5. 27 = 2 + 5n SUBSTITUTING Plug in the numbers for the letter variables and use Order of Operations (BEDMAS) to solve the equation A = 5n + 3p where n = 2 and p = 4 Plug the 2 in the equation for n A = 5(2) + 3p Plug the 4 in the equation for p A = 5(2) + 3(4) And solve: A = 10 + 12 A = 22 SOLVE FOR A: 1. A = L x W L = 16 W=4 2. A = b = 12 h=6 a=6 b=9 1 bh 2 1 3. A = (a + b)h 2 4. A = 3.14r2 r=3 5. A = b=7 bh 2 h = 10 h=4 35 FRACTIONS Fraction Rules 33 − numerator 4 − deno min ator RULES 1. Change mixed (8 ¼) fractions to an improper fraction (33/4). 2. Adding and Subtracting – you need to have the same number on the bottom of the fractions – this is a common denominator. 3. Multiplying – You do not need a common denominator. Multiply across. 4. Dividing – You do not need a common denominator. Flip the second fraction and then multiply. 5. Reduce Fractions. 1. -8 Change mixed (8 1 33 ) fractions to an improper fraction ( ). 4 4 1 take the denominator (bottom number) of the fraction and multiply it by 4 the whole number, then add the numerator (top number) 4 x 8 + 1 = 33 (will give you the new numerator). The denominator stays the same. Therefore 8 33 1 becomes 4 4 Change the mixed fraction to an improper fraction. SOLVE: 1. 3 1 5 2. 5 3 7 3. 2 1 2 4. 10 5. 6 1 5 2 9 36 2. Adding and Subtracting – you need to have the same number on the bottom of the fractions – this is a common denominator. 2 3 + = Make the denominators the same 3 4 3 – 3,6,9,12 4 – 4,8,12 Multiply both top and bottom by the same number Add the numerators 8+9= 8 9 2( x 4) 3( x3) + = + = 3( x 4) 4( x3) 12 12 17 12 The denominator stays the same Change into a mixed number 17 = 12 1 5 12 - The same rules apply for subtraction SOLVE; 1. 8 5 + = 9 18 2. 3 1 + = 5 15 3. 1 9 = 6 12 4. 12 1 = 14 7 5. 5 1 1 +2 = 3 6 6. 7 1 5 -1 2 12 37 3. Multiplying – You do not need a common denominator. Multiply across – Multiply the top numbers and then multiply the bottom numbers; 2 5 x = 3 10 If it is a mixed fraction change it to an improper fraction Multiply the top numbers Multiply the bottom Reduce 10 2 5 x = 3 10 5 2 10 x = 10 3 30 1 10(÷10) = 3 30(÷10) SOLVE: 1. 1 2 x = 2 9 2. 5 3 x = 7 4 3. 3 1 2 x4 = 2 5 4. 1 3 7 x2 = 5 8 5. 3 2 3 x4 = 7 9 38 4. Dividing – You do not need a common denominator. 3 5 + = 5 9 Flip the second fraction and then change the sign to multiplication. 3 5 3 9 + = x = 5 9 5 5 Multiply across 3 9 27 x = 5 5 25 Reduce the fraction and/or put into a mixed number 27 2 =1 25 25 SOLVE; 1. 32 4 ÷ = 7 14 2. 5 13 + = 8 2 3. 4 9 ÷ = 9 4 4. 1 3 7 ÷2 = 5 10 5. 3 1 3 ÷1 = 4 4 39 PRACTICE #1 1. 2. 54.58 72.24 + 8.04 94.75 78.65 + 8.06 3. 67.43 x 0.94 = 4. 5.64 ÷ 1.6 = 5. 45 mm = ________cm 6. 1.9kg = _________g 7. 4∧2 = 8. 3∧4 = 9. 144 = 10. If 31 = 6N-5 then N = 11. 4x - 2 = 10 then x = 5 12. 1 A = (c + d)B 3 B=5 13. 12 is 40% of ____________ 14. 20 is what % of 80? 15. 15% of 62 is ____________ 16. 5 17. 2 8 = 12 2 18. 7 1 x2 = 10 2 19. 3 1 ÷ = 4 2 20. 4 2 ÷ = 9 3 21. 6 as a decimal 8 22. 3.65 x 10 ∧ 4 = 23. 9 –(-3) = 24. (-4) – 9 = 1 1 +2 = 4 3 c = 2, d = 4, 40 PRACTICE TEST #2 a) b) c) a3 x a6 = x8 ÷ x5 = p7 ÷ p3 = 2. a) b) 43 = 26 = 3. a) b) 2.42 x 103= 1.6 x 205 = 1. b) c) d) e) f) 4. 5. a) b) c) d) 856 + 391 = 2608 – 7529 = 3624 ÷ 8 = 610 x 515 = a) b) c) d) 92.34 – 51.75 = 14.0 x 2.6 = 6.35 x 0.41 = 4.2 ÷ 0.3 = 10. a) b) c) 4 = 10 9 = 20 1 = 4 1 4 ÷ = 4 9 1 2 ÷ = 9 3 9x2 2 9 +4 = 3 12 6 1 = 15 5 13 x 21 = 4 2 2 11. a) What is 20% of 88? ________ b) 5.5 is 10% of what? ________ c) 19 is what % of 95? ________ (2a – 3b) + (4a + b) = (4a +5) + (2 + 3a) = (-a + 6) – (3a – 2) = 12. a) 81 = b) 25 = 8. If a = 2 Then what does 3a(-2a+5) = 13. 9. Write as a decimal 6. Solve, if m = -3 and n = 4 a) 5m – 4n = b) 2(m + n) = c) -(3m+ 2m) – (4m – n) = 7. a) b) c) a) 1 = 3 a) 40% b) 25% What is this as a fraction? ____________ What is this as a fraction? ____________ 41 PRACTICE #3 1. (-32) ÷ 7 = 11. (9÷3) x (8÷4) = 2. (-37) + (-47) = 12. 7.95 ÷ 1.5 = 3. (-9) – 2 = 13. 5.36 x 0.21 = 4. 12 ÷3 – 4 – 81 = 14. 35% of what number is 70? 5. 16 = 15. What # is 5% of 200? 6. 25 + 119 = 16. What % of 90 is 27? 7. Solve for x 3 (2x + 5) = 16 8. 18. reduce Evaluate; (x – y)3 X=2 9. 17. 41% = what as a decimal? y = (-2) Evaluate: 19. 2 1 + = 3 4 20. 5 3 = 6 4 21. 3 2 x = 4 3 22. 3 4 ÷ = 5 5 A=2, b=1, c=3, d=2 a (b + c) = 2d 10. 0.98 + 45.1012 + 32.333 + 0.0009 = 25 = 30 23. 4 7 2 -3 = 12 3 42 PRACTICE TEST A 1. The number 9,060,900 is written; a) Nine million six hundred nine thousand b) Nine million sixty nine thousand c) Nine million sixty thousand nine hundred d) Nine hundred six thousand nine hundred e) Nine billion six million nine hundred 2. 2 ∧ 4 means; a) b) c) d) e) 2 2 4 2 2 x4 x2x2 x4 x2x2x2 +2+2+2 3. Which is statement? a a) b) c) d) e) (3 ÷ 1) + 0 = 1/3 (3 + 0) – 1 = 1 (3 + 0) x 1 = 3 (0 – 3) x 1 = 3 3 + (0 x 1) = 0 4. 2 is 5 equal to 6. 45% is the same as 10. 578 which fraction: X a) b) c) d) e) 7. Which sentence always true? a) (a+b)d = d + (ab) b) x(a-b) = (ab) –x c) (cd) + t = c(d+t) d) fg – a = a-fg e) cb – cd = c(b-d) true 8. what decimal? a) 0.4 b) 0.25 c) 0.04 d) 0.2 e) 0.52 5. 3.14 x 10 ∧ 3 is equal to; a) 0.314 b) 3140 c) 31.4 d) 0.00314 e) 9.42 3/5 9/20 45/10 4/5 NG a) b) c) d) e) 9. 23 196 905 + 58 1062 1182 1082 1181 NG 24067 -18392 a) 5775 b) 14335 c) 5675 d) 42459 e) NG a) b) c) d) e) is 11. 57 254956 3596 32946 32900 NG 467 X 208 a) 69377 b) 97136 c) 13076 d) 97130 e) NG 12. 6255 ÷ 5 = a) b) c) d) e) 125 121 1250 1251 NG 13. 36916 ÷ 29 = a) b) c) d) e) 204 1204 2104 1240 NG 43 PRACTICE TEST A CON’T 14. 4 a) 5 b) 6 c) 3 d) e) 15. a) b) c) d) 16. a) b) c) d) e) 1 6 +1 = 4 8 7 8 1 2 7 5 12 NG 11 1 = 18 6 10 12 10 18 4 9 17. What is C when d=2, 20. 25 is related to 5 and 15 is related to 3 in the e=1, f=6? same way that 20 is 1 C= (d-e)f related to; 4 a) 24 1 b) 1 2 1 c) 4 d) 6 e) NG 18.1.03+25.021+198.2 = a) b) c) d) e) 5 15 4 19 NG 21. 13 is 20% of; a) 225.251 a) 65 b) 56.141 b) 2.6 c) 0.225251 c) 0.65 d) 225251 d) 26 e) NG e) NG 19. 22. (-19) + 7 = NG 4 1 x3 = 6 4 10 12 4 3 24 1 3 6 3 44 26.48 – 8.319 = a) 22.179 a) -26 b) 18.179 b) 12 c) 6329 c) 26 d) 18.161 d) -12 e) NG e) NG NG 23. (-3) – 14 = a) b) c) d) e) -6 -22 22 112 NG 44 PRATICE TEST A CON’T 24. 13 x 2 1 a) 26 4 1 4 b) 117 c) 26 d) 29 1 4 27. a) b) c) d) e) If 49 16 7 24 NG 4 n = 7 28 30. (-4) x (-3) = a) b) c) d) e) 12 -12 -7 7 NG e) NG 1 5 ÷ = 3 9 25. a) b) c) 45 3 2 1 3 5 27 d) 15 e) NG 26. y=4x -7 What is y if x = 4 a) 9 b) 3 (- ) 4 c) 4 d) 7 e) NG 28. 25% of 90 = a) 2250 5 b) 18 c) 22.5 d) 0.28 e) NG 144 31. a) b) c) d) e) 62 0.12 14.4 12 NG a∧6 x a∧2 = d f 29. If = then f = e g 32. de g e b) gd dg c) e a) 12a b) 2a ∧ 6 c) a∧8 d) a ∧ 12 e) NG a) d) NG 45 PRACTICE TEST B 1. The number 23,062,400 6. 60% is the same 11. is written; as what fraction? a) two million three hundred thousand six hundred twenty-four b) twenty-three million sixtytwo thousand four hundred c) twenty-three million six hundred twenty-four thousand d) two hundred thousand three hundred sixty-two and four hundred e) twenty-three million six thousand two hundred forty 2. 64 means; a) 6 + 4 b) 4x4x4x4x4x4 c) 6x4 d) 6+6+6+6 e) 6x6x6x6 3. Which is a true statement a) 6x1=1 b) 6x0-6 c) 6-6=0 d) 6+1=6 e) 6/0=6 a) 6/100 b) 3/10 c) 2/5 d) 3/5 e) NG a) b) c) d) e) 629 X 230 14467 31250 3145 144670 NG 7. Which sentence is 12. 3624 ÷ 8 = always true? a) 453 a) XY=Z=X(Y-Z) b) 440 R4 b) M(N-P)=MN=MP c) 449 c) (R+S)T=R+ST d) 516 R4 d) XY+Z=X+YZ e) NG 13. 11986 ÷ 26 = 8. 19 422 a) 479.44 36 +561 b) 461 c) 76.38 a) 938 d) 361 b) 41343 e) 46.1 c) 50243 d) 40343 e) NG 4. 5/8 is equal to what 9. 73401 14. 14003 ÷ 67 = decimal; +23158 a) 209 a) 0.625 b) 215 b) 0.58 a) 50357 c) 189 c) 0.5 b) 41343 d) 306 d) 1.6 c) 50243 e) NG e) NG d) 40343 e) NG 5. 3.42 x 103 is equal to; 15. 5 1/3 + 2 ½ = 10. 527 a) 0.0000342 X 35 b) 342 a) 7 2/5 a) 18440 c) 34.2 b) 7 2/6 b) 17445 d) 3420 c) 7 2/3 c) 4216 e) 342000 d) 7 1/6 d) 18445 e) 7 5/6 e) NG 46 PRACTICE TEST B CON’T 16. a) b) c) d) e) 17. a) b) c) d) e) 18. a) b) c) d) e) 19. a) b) c) d) 9/10 – 4/5 = 5/5 5/10 1/10 5/15 3/10 2/5 x 1 ¾ = 1 6/20 1 8/15 8/35 7/10 NG 8 x 3 ¼= 24 ¼ 26 13/32 6 8 3/4 2/5 ÷ 1/3 = 3/5 1 1/8 3/24 2/5 e) 1 20. a) b) c) d) e) 3/8 ÷ 1/3 3/5 1 1/8 3/24 2/5 NG 21. a) b) c) d) e) 22. a) b) c) d) e) 1 5 4.732+2.610+0.109= 6.450 7.441 7.551 6.451 7.451 51.00 – 28.37 = 22.63 37.37 23.63 23.37 NG 23. 32.4 x 6.05 = a) 3.564 b) 19602 c) 196.02 d) 19.602 e) NG 24. 6.50 x 0.39 = a) 79.00 b) 2.535 c) 253.5 d) 7900 e) NG 25. 3.91 ÷ 0.34 = a) 1.15 b) 11.5 c) 115 d) 0.115 e) NG 26. 4.6 ÷ 0.2 = a) 23 b) 0.023 c) 2.3 d) 0.23 e) NG 30. a) b) c) d) e) 31. a) b) c) d) e) 32. a) b) c) d) e) 33. a) b) c) d) e) 9 is 40% of ___ 2.25 225 0.225 22.5 NG 12 is what % of 60? 25 5 50 20 NG (-9) + 15 = 24 6 -24 -6 NG -8 – 3 = -11 11 -5 5 NG 27. 5 is related to 15 and 3 is related to 9 in the same way that 4 is related to; a) 14 b) 10 c) 12 d) 1 e) NG 28. If 3/8=15/n, then n= a) 20 b) 40 c) 32 d) 35 e) NG 34. a) b) c) d) e) (-9) x (4) = 36 -5 -36 5 NG 29. 20% of 88 = a) 1936 b) 176 c) 4.4 d) 17.6 e) NG 35. a) b) c) d) e) 36. a) b) c) d) e) 81 8.1 3 27 6561 9 X3 x X5 = X15 X35 15X X8 NG 47 PRACTICE TEST B CON’T 37. If 4n + 3 = 19, then n= a) b) c) d) e) 38. a) b) c) d) e) 4 3 5 2 NG If BC D BCD CD B BD C NG 39. A = a) b) c) d) e) 40. a) b) c) d) e) A C = , then A= B D 1(a + b)h 2 What is A when a=3, b=5 and h=9? 9½ 8½ 24 36 NG 18 − (6 + 8) x5 = B 7 What is B? 3 10 8 12 NG 48