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Published byGeoffrey Adams Modified over 7 years ago

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Fraction Multiplication And Cancelation

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Fraction Multiplication Here are some fraction multiplication problems Can you tell how to multiply fraction from these examples?

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Multiplication Multiply numerator by numerator And denominator by denominator

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Try some. Multiply the following:

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Answers Multiply the following:

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Mixed Numbers Because of the order of operations, Mixed numbers cannot be multiplied as is Change mixed numbers to improper fractions, then multiply.

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Try some Change any whole or mixed numbers to improper. Multiply straight across. Simplify answers

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Answers Change any whole or mixed numbers to improper. Multiply straight across. Simplify answers

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Cancelling Reduce before you multiply

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Canceling Reducing before mutiplying is called canceling. ICK! Instead think the following in your head.

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Canceling on paper Rules: One factor from any numerator cancels with like factor from the denominator.

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Try one Say “--- goes into ____ this many times.” As you cross each number out and write what is left after canceling above the number.

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Answer Say “--- goes into ____ this many times.” As you cross each number out and write what is left after canceling above the number.

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Try one more Make whole and mixed numbers improper Cancel if you can Multiply Numerators and denominators straight across. Simplify

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Answer Make whole and mixed numbers improper Cancel if you can Multiply Numerators and denominators straight across. Simplify

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