How to Multiply and Divide Fractions

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How to Multiply and DivideFractions

• A Step-by-Step Guide

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Lets start with multiplying fractions.

• 3/4 2/5 ?

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Multiply the numerators.

• 3/4 2/5 6/?

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Then multiply the denominators.

• 3/4 2/5 6/20

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Simplify the product.

• 3/4 2/5 6/20 2/2 3/10

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Double check to see if the product can be reduced
any further and if not, your are done.

• 3/4 2/5 3/10 final product

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Try solving this problem

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• When you have the product in simplest form, move
  on to the next slide to check your work.

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The problem would be worked like this.

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• Were you successful in solving the problem?

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Lets try dividing fractions now.

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Start by inverting the second fraction and
changing the division sign to a multiplication
sign.

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Multiply the numerators.

• 7/8 4/3 28/?

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Multiply the denominators.

• 7/8 4/3 28/24

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Simplify the product by dividing the denominator
into the numerator. Subtract and place the
difference as the new numerator. Keep the same
denominator.

• 7/8 4/3 28/24 1 4/24

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Divide both the numerator and denominator by 4 to
get the final product.

• 7/8 4/3 28/24 1 4/24
• 1 4/24 4/4 1 1/6 final answer

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Try this problem on your own and then click ahead
to the next slide to check your work.

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Invert the second fraction and change the
division sign to a multiplication sign.

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Multiply the numerators and the denominators.

• 5/9 3/1 15/9

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Simplify the product.

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Reduce the product and you are done.

• 5/9 3/1 15/9 1 6/9 1 2/3

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Follow these steps and you cant go wrong. If you
need to go over this presentation again, then
feel free to do so. Again, if you have any
questions, ASK ME!