Multiplying and Simplifying Fractions

Mr. West explains how to multiply and divide fractions in this math tutorial. He demonstrates the process of multiplying fractions by multiplying the numerators and denominators and simplifying the results. For division, he introduces the keep-change-flip method to convert division into multiplication by the reciprocal. The video also covers simplifying fractions both before and after multiplication to make calculations easier. Mr. West concludes with additional resources for further practice.

When multiplying fractions, what do you do with the numerators?

• Add them together

• Multiply them together

• Divide them

• Subtract them

How do you express a fraction in its lowest terms?

• Subtract the numerator from the denominator

• Add the numerator and denominator

• Divide the numerator and denominator by their common factors

• Multiply the numerator and denominator by the same number

What is the result of multiplying 1/2 by 5/4?

• 5/8

• 10/8

• 1/4

• 5/4

What is the first step in converting a division of fractions into a multiplication problem?

• Multiply the numerators

• Keep the first fraction the same

• Subtract the fractions

• Add the fractions

What does the 'flip' step in 'keep, change, flip' refer to?

• Changing the first fraction

• Changing the operation to addition

• Using the reciprocal of the second fraction

• Multiplying both fractions

What is the reciprocal of 4/9?

• 9/4

• 4/9

• 1/4

• 1/9

If a fraction has a numerator of 22 and a denominator of 2, what is its simplest form?

• 44/4

• 22/2

• 11/1

• 2/1

What is the simplified form of 14/90?

• 7/9

• 14/45

• 7/45

• 14/9

What is the benefit of simplifying fractions before multiplying?

• It makes the fractions larger

• It reduces the size of the numbers involved

• It makes the multiplication process more complex

• It increases the number of steps

What is the final result of multiplying 5/8 by 7/2 after simplification?

• 35/16

• 70/16

• 5/16

• 7/16