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Dividing fractions ? 3 4 1 2
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When dividing fractions, you have to ask yourself, “ How many 1/8’s are in ¼?
¼ ÷ ⅛ 1/8 ¼ ÷ 1/8 = 2
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How many ‘s are in 2 plates? What is true about 2 ÷ and 2 • 4 ?
Two paper plates are cut into four equal pieces each. 8 How many ‘s are in 2 plates? 8 What is 2 ÷ ? 8 What is 2 • 4? They are the same! What is true about 2 ÷ and 2 • 4 ?
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There is a mathematical short-cut for dividing fractions
There is a mathematical short-cut for dividing fractions. The first fraction is MULTIPLIED by the RECIPROCAL of the second fraction. Reciprocal 1 4 2 5 5 2 4 1 3 4 1 2 ÷ = 1 2 1 3 2 3 4 2 1 1 = x = 2
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1 Let's do a few together 8 9 2 3 ÷ = 8 9 3 2 4 3 1 3 = x = 1 3 8 15 ÷
All-Stars! 5 1 3 15 8 5 8 x = 1
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Multiplying fractions ain’t no problem Find the product of the top
And the product of the bottom Dividing fractions easy as pie, Reciprocate the second and multiply!
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Now it's your turn 1 4 1 3 1 2
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Dot-to-Dot WS DO YOUR BEST!!!!!
Assignment
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Partner Practice
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