How to Multiply and Divide Fractions | Math with Mr. J

When multiplying fractions, what is the correct method?

• Add the numerators and multiply the denominators

• Multiply straight across (numerator by numerator, denominator by denominator)

• Find a common denominator first

• Subtract the numerators and multiply the denominators

What is the result of multiplying 7/9 by 2/3?

• 14/27

• 9/12

• 21/18

• 14/18

Which method is used to divide fractions?

• Keep the first fraction, change division to multiplication, flip the second fraction

• Multiply the numerators and divide the denominators

• Find a common denominator and then divide the numerators

• Subtract the second fraction from the first

What is 3/8 divided by 1/4, expressed as a simplified mixed number?

• 1 and 1/2

• 12/8

• 3/32

• 1 and 4/8