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SchoolNova Math3 Unit 9 CW 1 a We paid dollars for 4 loaves of bread. How much money do we have to pay for 6 loaves? a dollars for 4 loaves of bread. How many loaves of bread can we buy with c dollars? Maria has b dollars. She bought 5 cookies for d We paid dollars each. How much money does she have left? a b Dan has dollars. His mom gave him dollars. How many more dollars does Dan have now? 2 Divide and indicate the remainders. Long Multiplication by a single digit 3 This is simple…. 4 ….and this is simple, How many tens and how many ones go into each number? Write each of the following numbers in the expanded form. 56, 34, 18, 9, 28,74, 34, 80, 66,19, 21, 77, 13, 23, 89 56 = 50 +6 5 but what will we do with this? 16=10+6 (10 + 6) × 3= 10 × 3 + 6 × 3 =30 + 18 = 48 6 7 Using the picture below explain how we can multiply numbers 24 and 8. Examine the different ways to multiply the numbers. Which way is the most convenient? 8 23 × 4 23 is 2 tens and 3 ones. 3 ones multiplied by 4 gives 12 ones and 2 tens multiplied by 4 gives 8 tens (that is 80). 80 and 12 are added to give the final product 92. The 3 ones are first multiplied by 4 giving the product 12, which is 1 ten and 2 ones. 2 is written in the ones column and the 1 is recorded in the tens column. Now the 2 tens are multiplied by 4 to give 8 tens. The 1 ten recorded before is added on, so the product has 9 tens. Angle 9 Draw two rays, which have their endpoints at the point below: . Two rays which share an endpoint form an angle. Also, we say that when two lines meet at a point, these lines form an angle. A point where the lines meet is called a vertex of the angle, and the lines are called sides of the angle. We use three capital letters to name an angle. The letter which names the vertex is the middle letter. For example, an angle ABC has a vertex at the point B. 10 Find all the rays in the drawing above. Write them down. ____________________________ Point O is a vertex of the angle. Figure NOP is an angle. Rays ON and OP are the sides of the angles. State the vertex and the sides for the angle MON. The angle MON is obtuse. The drawings below show various angles. The last case shows the right angle. The angle that is formed by the sides of a square called right angle. The angle that is bigger than the right angleis called an obtuse angle. The angle that is smaller than the right angleis called an acute angle. 11 Write down all the angles that you can find of the picture below. Right angles: ______________________________________________________________ Obtuse angles: ______________________________________________________________ Acute angles: _______________________________________________________________ 12 Finish the expression by substituting the words “greater” and “smaller” appropriately. a) Acute angle is always __________________ than right angle. b) Obtuse angle is always _________________ than right angle. c) Acute angle is always __________________than obtuse angle d) Right angle is always ___________________ than acute angle e) Obtuse angle is always __________________ than acute angle. 13 Here are two angles. Which one is larger? Why? 14 The vertices of the angles on the picture below share the point. How many angles can you find? Write them down. ___________________________________ The angles MOK and KOS are called supplementary angles. The supplementary angles share the vertex O and a side OK. The sides OC and OM of the supplementary angles form a straight angle. 15 If you added 4 squares to the left side, how many circles would you need to add to the right side to keep it balanced? If you added 6 squares to the left side, how many circles would you need to add to the right side to keep it balanced? 16 17 Foxy Tail has a basket containing ten apples. He has ten friends who each desire an apple. He gives each of his friends one apple. After a few minutes each of his friends has one apple each, yet there is an apple remaining in the basket. How it is possible?