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© 2007 M. Tallman

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Jenny uses ¼ of her flour to make cookies. She had X cups of flour. How many cups of flour did she use? There are 640 students in a school. If there are s students in each classroom, how many classrooms are there ? f = X × ¼ c = s ÷ 640

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© 2007 M. Tallman Kelly eats.5 of her birthday cake. Her cake was divided into y equal pieces. How many pieces did she eat? Megan has 48 pieces of candy. There are x pieces in a box. How many boxes of candy does she have? p = y ×.5 b = x ÷ 48

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© 2007 M. Tallman t × 6 6t 11 × b 11b c × 7 7c 22 × f 22f

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© 2007 M. Tallman ) 9 3 ) ways to represent a division in math… fraction division bar 12 ÷ 49 ÷ 3 symbol

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© 2007 M. Tallman b ÷ 7 55 ÷ p r ÷ 8 9 ÷ f b 7 p 55 r 8 9 f

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x5g 7x5g Evaluate means solve. g,=7 x5g = 35

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21÷3c ÷3c Evaluate means solve. c,= ÷3c = 7

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q x 6, q = 8 p ÷ 8, p = 56 2 ½ x f, f = 2 b ÷ 3.5, b = 7 28 ÷ y, y =

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© 2007 M. Tallman ? Justin purchases 4 new books every month. How many books will he have after 4 months ? 28 1 Month 2 Months 3 Months4 Months O Months bm m = months b = books Rule ? Rule: b = m x 4 or, m = b ÷ 4

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© 2007 M. Tallman Rule: b = m x 4 or, m = b ÷ 4 (b = 4m) (m = ) b bm b = books m = months Use the function rules to answer these questions: How many books will Justin have after 10 months? Justin has 32 books. How many months have passed? How many books will Justin have after 6 months? Justin has 48 books. How many months have passed?

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© 2007 M. Tallman # of Cubes (c) Element # (e) Rule: c = e × 2or, e = c ÷ 2 Rule ?

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© 2007 M. Tallman Rule: c = e x 2 or, e = c ÷ 2 (c = 2e) (e = ) c 2 Use the function rules to answer these questions: How many cubes are in element 24? Which element has 36 cubes? How many cubes are in element 50? Which element has 90 cubes? # of Cubes (c) Element # (e)

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