Mastering Multiplication and Division of Fractions

The video tutorial from Moomoomath explains how to multiply and divide fractions. It begins with an introduction to the concepts, highlighting that multiplying and dividing fractions is often simpler than adding or subtracting them. The tutorial provides step-by-step examples of multiplying fractions by multiplying the numerators and denominators, followed by simplification. It also covers dividing fractions using the 'keep, change, flip' method, which involves keeping the first fraction, changing the division sign to multiplication, and flipping the second fraction. The video concludes with a call to action to subscribe for more math tutorials.

Why does the teacher find multiplying and dividing fractions easier than adding and subtracting?

• Because it is more visual.

• Because it is more fun.

• Because it involves fewer steps.

• Because it requires less memorization.

Tags

CCSS.5.NF.B.5B

What is the first step in multiplying fractions?

• Subtract the denominators.

• Multiply the numerators.

• Add the numerators.

• Divide the denominators.

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CCSS.5.NF.B.6

In the example 1/2 * 5/4, what is the product of the numerators?

• 5

• 1

• 4

• 2

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

How do you simplify the fraction 22/18?

• Subtract 2 from both the numerator and the denominator.

• Divide both the numerator and the denominator by 2.

• Add 2 to both the numerator and the denominator.

• Multiply both the numerator and the denominator by 2.

What is the reciprocal of 4/9?

• 1/9

• 1/4

• 4/9

• 9/4

What is the first step in dividing fractions?

• Flip the first fraction.

• Change the sign to addition.

• Keep the first fraction.

• Multiply the denominators.

Tags

CCSS.6.NS.A.1

In the example 3/2 ÷ 4/9, what is the product of the numerators after flipping the second fraction?

• 12

• 27

• 6

• 18

Tags

CCSS.6.NS.A.1

How do you simplify the fraction 6/8?

• Subtract 2 from both the numerator and the denominator.

• Add 2 to both the numerator and the denominator.

• Divide both the numerator and the denominator by 2.

• Multiply both the numerator and the denominator by 2.

What is the simplified form of 12/18?

• 4/9

• 6/9

• 3/2

• 2/3

What should you do if a fraction cannot be simplified further?

• Multiply it by 2.

• Subtract 1 from both the numerator and the denominator.

• Leave it as it is.

• Add 1 to both the numerator and the denominator.