Multiplying and Simplifying Fractions

This video tutorial covers the process of multiplying fractions, highlighting that it is often simpler than adding or subtracting them. It provides step-by-step examples, including handling negative fractions and different denominators. The tutorial introduces tricks for simplifying multiplication, such as cross-dividing, and concludes with advanced examples to reinforce the concepts.

Why is multiplying fractions considered easier than adding or subtracting them?

• It uses addition instead of multiplication.

• It always results in whole numbers.

• It requires no common denominators.

• It involves fewer steps.

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CCSS.4.NF.B.4B

CCSS.4.NF.B.4A

What is the result of multiplying 1/2 by 1/2?

• 1/2

• 1/4

• 1

• 2

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CCSS.7.NS.A.2A

How do you handle a negative fraction when multiplying?

• Convert it to a positive fraction.

• Apply the negative sign to the numerator.

• Apply the negative sign to the denominator.

• Ignore the negative sign.

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CCSS.5.NF.B.6

What is the result of multiplying 2/3 by 1/2?

• 3/4

• 1/6

• 2/5

• 1/3

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CCSS.5.NF.B.6

What is the purpose of the cross-dividing trick in fraction multiplication?

• To multiply fractions without using numerators.

• To convert fractions to decimals.

• To avoid reducing the final fraction.

• To add fractions more easily.

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CCSS.7.NS.A.2A

What is the result of multiplying -3/4 by 2/11?

• -1/11

• -6/44

• -1/22

• -3/22

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CCSS.7.NS.A.2A

What happens when you multiply two negative fractions?

• The result is positive.

• The result is undefined.

• The result is zero.

• The result is negative.

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CCSS.5.NF.B.6

What is the result of multiplying 2/9 by 18/2 using the cross-dividing trick?

• 1

• 2

• 3

• 4

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CCSS.5.NF.B.6

How can you simplify the multiplication of 15/21 by 14/5?

• By converting to decimals.

• By using the cross-dividing trick.

• By multiplying directly.

• By adding the fractions first.

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CCSS.5.NF.B.6

What is the final result of multiplying 15/21 by 14/5 after simplification?

• 2

• 3

• 1

• 4

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CCSS.5.NF.B.6