Operations with Rational Numbers

Basic Computation

100

What is the value of the following expression?

0.801 + 54.9

What is 55.701?

200

What is the product of 0.06 x 54.1?

What is 3.246?

300

Find the difference.

9 3/7 - 3 2/3

What is 5 16/21?

400

Find the sum.

3 9/20 + 6.5 =

What is 9 19/20?

500

Find the value of the following expression.

15 14/25 - 8.11

What is 7 9/20?

Adding Rational Numbers

100

3.15 + 2.25

What is 5.40?

200

0.38 + 1.2

What is 1.58?

300

9/25 + 17/25

What is 26/25 or 1 1/25?

400

5/12 + 1/12

What is 6/12 or 1/2?

500

To make a small amount of play dough, you can mix 1 cup of flour, 1/2 cup of salt and 1/2 cup of water. What is the total amount of ingredients added to make the play dough?

What is 2 cups?

Subtracting Rational Numbers

100

8/11 - 3/11

What is 5/11 ?

200

 2/3 + 1/4

What is 11/12 ?

300

0.806 - .537

What is 0.269 ?

400

3 2/3 - 1 1/8

What is 1 22/24 or 1 11/12 ?

500

The snowfall in Rochester, NY in the winter of 1999-2000 was 91.5 inches. Normal snowfall is about 76 inches per winter. How much more snow fell in the winter of 1999-2000 than is normal?

What is 15.5 inches?

Multiplying Rational Numbers

100

5(1/3)

What is 1 and 2/3 ?

200

3.2 x 5

What is 16?

300

1/6(2/3)

What is 1/9?

400

Evaluate 2/3 * x if x = 6

What is 4?

500

Travis painted for 6 and 2/3 hours. He received $27 an hour for his work. How much was Travis paid for doing this painting job?

What is $180?

Dividing Rational Numbers

100

1/4 divided by 3/8

What is 2/3?

200

20 divided by 0.5

What is 40?

300

15 divided by 5/8

What is 24?

400

Emma bought 2 and 1/2 yards of cording for the trim around the edge of a square pillow. How much will she use for each side of the pillow?

What is 5/8 yard?

500

Sean has a loan of $8804.46 including interest. He makes payments of $209.63 each month on the simple interest loan. How many months will it take for Sean to repay his loan?

What is 42 months?