Multiplying and Effects of Fractions

Find the value of the following expression:

5 x 2/7

• 15/7

• 10/7

• 20/7

• 25/7

Find the value of the following expression:

15 x 4/11

• 150/11

• 90/11

• 120/11

• 60/11

True or False: The value of 2 x 3/17 is 6/17.

• True
• False

Which of the following expressions are equivalent to each other?

• 8/2 x 5

• 2/5 x 8

• 2 x 8/5

• 5 x 2/8

Multiplying a number by a fraction less than 1 results in a product that is less than the first number.

3/10 is less than 1, the product of 2 x 3/10 is less than (a)   .

Multiplying a number by a fraction that equals 1 results in a product that is equal to the first number.

9/9 is equal 1, so the product of 3 x 9/9 is equal to (a)   .

Which of the following expressions have a product less than 5?

• A. IV only

• B. II and IV

• C. I, II, and III

• D. I and III

Which of the following fractions makes the number sentence true?

4/7 x ____ = 12/21

• 3/3

• 12/7

• 3/28

Carol measured a straw and wrote down how long it was in inches. Pete multiplied Carol's straw length by 1 1/4 and cut a straw to be that many inches long. Joe multiplied Carol's straw length by 1/2 and cut a straw to be that many inches long. Which straw belongs to Carol?

• Straw A

• Straw B

• Straw C

Look at this expression.

1/7 x 5/5

What is true about its product?

• The product is equal to 1/7.

• The product is greater than 1/7.

• The product is 5 times 1/7.

• The product is less than 1/7..