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Do Now Solve. Write in simplest form.

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Do Now. Solve . Write in simplest form. 10/8/2014 2-3 B Divide Whole #’s by Fractions. Student Example. Reciprocal - one of two numbers with a product of 1 -in real terms- flip the numerator and denominator. =. Example 1. Example 2. Find the reciprocal of 7. Method:. - PowerPoint PPT Presentation

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Do NowSolve. Write in simplest form.

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10/8/2014 2-3 B Divide Whole #’s by Fractions

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Reciprocal- one of two numbers with a product of 1-in real terms- flip the numerator and denominator

=

Student Example

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Example 1

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Example 2Find the reciprocal of 7.

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Method:

• To divide a whole number by a fraction, multiply its reciprocal.

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KCFEEP

HANGE

LIP

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• Step 1 – Keep your first fraction.

÷4

31

1 = 31

Example 3

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• Step 2 – Change the operation to multiplication.

÷4

31

1 = 31 x

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• Step 3 – Flip the second fraction.

÷4

31

1 = 31 x 1

4

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• Step 4 – Multiply the numerators, then multiply the denominators.

x 131

4 = 121

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• Step 5 – Simplify (if possible).

x 131

4 = 121 =12

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Example 4

Multiply numerators. Multiply denominators.

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Example 5

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Multiply by the reciprocal.

2

1

Divide 4 and 2 by the GCF, 2.

Simplify.

Answer: So, there are 6 runners in the race.

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Your Turn!

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Homework

• Pg. 122 #1-28 Evens• Ch. 1 Test Corrections due tomorrow!