120405 math lesson equivalent fractions test

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How do you find an equivalent fraction? Example:

Transcript of 120405 math lesson equivalent fractions test

Page 1: 120405 math lesson equivalent fractions test

How do you find an equivalent fraction?

Example:

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In this lesson you will learn how to find equivalent

fractions by using the identity principle.

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Thinking that fractions are equivalent because they have the same numerator.

A common mistake is…

35

38

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Let’s Review

Fractions that look different can be equivalent (have the same value)

12

48

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The Identity Principle If you multiply or divide any number by 1,

you get the same number.

3 x 1 = 3

3 _ 1 = 3

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This also works for fractions.

x 1 = _ 1 =

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1 can also be a fraction. When the numerator and denominator are the same, the fraction equals 1.

22 = 1

1616

= 144

= 1

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What if we multiplied or divided a fraction by a fraction that equaled one?

x = _ =918

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Example:

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x =

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_ =

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In this lesson you learned how to find equivalent fractions by using the identity principle.