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Year 3 Term 3 Week 4- Maths 1. Year 3 recorded the temperature four times during a school day. 9 o’clock - 14℃ 11 o’clock – 20℃ 1 o’clock - 24℃ 3 o’clock – 22℃ At 10 o’clock, the temperature was most likely to have been a) 12℃ b) 18℃ c) 22℃ d) 24℃ 4. Prinya looked into the mirror and saw this reflection. 2. 5. A bricklayer lays 1200 bricks a day. He breaks about 4 bricks in every 100. a) b) c) d) 2:40 3:40 4:20 8:20 Over five days, about how many bricks does he break? a) b) c) d) 6. a) b) c) d) 3. Some Children were asked to pick which sport they wanted to do. This table shows their choices. Sport Number of Children Swimming 10 Soccer 12 Net ball 11 Softball 7 What is the least number of children who would need to changed sports to make all groups equal? a)1 b)2 c)3 d)6 48 120 240 1160 FRACTIONS – RECIPRICAL Definition _ Switching the denominator with the numberator. Find the reciprocal of the following fractions. Simplify if necessary. EG a) 3 5 5 3 1. 1 4 _____ 5. 4 16 9. 30 6 13. 2 4 5 b) 3 9 9 3 =3 2. 2 3 3. _____ 6. 5 _____ 7. 24 _____ 10. 132 _____ 11 4 9 ______ 12 _____ ______ 8. 25 24 11. 6 ______ 6 52 14. 7 1 _____ 4. 2 5 4 ______ 12. 24 ______ 48 ______ 15. 13 9 _____ 14 ______ Be ware …. Answers in proper fractions. FRACTIONS – ADDITION 1. 4 + 7 = 8 8 ________ 2. 3 + 2 = 4 4 4. 5. 1 + 3 = 2 4 _________ 3 - 1 = 4 4 ________ ________ 3. 5 + 6 = 12 12 _________ 6. 2 1 - 1 1 = 2 4 ________ 2D shape Part A According to the angle and side description, name the polygons. 1. I have eight obtuse angles which are the same size. I also have eight sides the same length. 2. I have four right angles and four sides the same length 3. I have one obtuse, one acute angle and two right angles. I am also a quadrilateral. 4. I have four right angles and two sets of parallel sides of different lengths. 5. I have two acute angles, two right angles and one reflex angle. I am also a pentagon. 6. I have two acute angles and two obtuse angles. I also have two sets of parallel sides of different lengths. Part B Draw the diagonals in each shape, and then record the number of diagonals on each. ( diagonals are straight lines drawn from one corner/angle of a polygon to another non- adjacent corner/angle) A, B, ____ diagonals ____diagonals C, D, ____ diagonals ____diagonals E, F, ____ diagonals ____ diagonals Part C. Lable the angles right, obtuse, acute, reflex or straight A, B, C, E, F, I J D G, K H L Mixed Problems 1) There was a spaghetti competition and two contestants, Jane and Kane, made it to the finals. There was 1kg of spaghetti per plate for each person. How many grams has Jane eaten if she has finished ¾ of the spaghetti from her plate? ______________________ 2) In the Darwin to Dubbo Dash, 240 cars began the race. If ¼ of them crashed on the way, how many cars completed the race? __________________________ 3) Jumpy the kangaroo hops 20 times every hour. How many times did it hop if it started hopping at 12 p.m. and stopped to rest at 2:30 p.m.? ___________ 4) Rachel received twice as much lollies as Amanda, who received three times as much as Kimberly. If Kimberly received 3 lollies, how much did Rachel receive? _______________ 5) It takes Speedy the seagull two and a half hours to fly from Sydney to Adelaide. If Speedy left Sydney at 11:30 a. m. to fly to Adelaide, what time would she arrive in Adelaide? _______________ 6) Joanna saves up $14 each month from her pocket money. How much would she save in one year? ________________ 7) Slowpoke the turtle can walk 5km in one day. If it wanted to travel 120km, how many days would it take him? _________________ 8) Out of the 200 children in year 3, 50% went on an excursion. How many stayed behind at school? ___________________ 9) Jeremy found 60 tennis balls under his house one day. He could only carry five at a time, put the balls down in his room, then return. How many trips does he have to make? _______________________ Homework Set 4 Part A Write the numbers under the files Part B 1. 49-7=_____ -7=____-7= _____7=____=_____ 2. 60-8=_____ -8=____-8= _____8=____=_____ 3. 85-9=_____ -9=____-9= _____9=____=_____ 4. 55-6=_____ -6=____-6= _____6=____=_____ 7, Write the largest and smallest numbers from those above. ____________ 5. 55-5=_____ 6. 82-9 = ______ 7, 93-7= ______ 8. 84-_____=58 9, 67-____= 58 10. ____-6 = 39 ____________ Write these numbers in numerals 8, Fifteen thousand, seven hundred and eleven_______ 9, fifty –eight thousand, three hundred and eighty five _____ 10, eight thousand and fourteen Part C Volume = length x breadth x height What would be the volume of these boxes? 11. Complete the subtraction number wheel. Discuss the pattern. 61-1= 61-2= 61-3= 61-4= 61-5= 61-6= 61-7= 61-8= 61-9= 61-10= 1, ________________ 2, _________________ 5 m 4m GA 6m 3 m 5m 4m GA The number on each petal represents that many bees. Figure out how many bees are on each flower and write your answer in the centre of the flower. Year 3 - T3- Week4 Exercise 1. Share $25.00 between 5 boys ______ 2. If James ate a fifth of a cake, what fraction is left?_______ 3. Fridge magnets cost $4.50 each. How much would 3 cost?_______ 4. Draw a 2 cm vertical line halfway along a 5 cm long horizontal line. _______ 5. How many centimetres in 5 km? _______ 6. One- fifth of 4.5L is ________ ml 7. A cow drinks 2 L of water a day and produces 1.5L of milk each day. How many litres of water would a cow drink in a week?_______ 8. Referring to the same cow in question 7, how many litres of milk would the cow produce in a fortnight? ______ 9. How many 1 cm3 blocks would fit inside a box 10 centimetres high? Wide and long?_____ 10. What is the smallest four- digit number in which all digits are the same? ______ 11. Find the average of 30, 10,40 and 0. _____ 12. A tiger runs at an average speed of 60 kilometres/ hour. How far could it run in 6 hours? _________ 13. Name a polygon with 6 sides. __________ 14. How many days in 5 weeks _________ 15. What is the difference between 2130 and 192.44 _______ 16. If box a) holds 0.5L of water when it is ½ full and box b) holds 0.85 when it is ¾ full. Which box has the greater volume? ________ 17. Dennis put 12 shells in each of 30 rows. How many shells did he have? ________ 18. Which shape has the most axes of symmetry? ______ 19. Which months have 30 days?__________ 20. I am a three digit number with all digits the same. When multiplies by one of my digits I become 1776. What number am I ? ___________ 21. How many 200g tins of tuna can be filled using 2kg of tuna?________ 22. 90324 more than 0.01 is __________ 23. 10,25,40,55,_____, ____, ______ 24. How many angles does an octagon have? _______ 25. Draw the net of tetrahedron. 26. If Christina walks 20 metres every minute, how far can she walk in an hour? ______