Operations with Rational Numbers

Vocabulary

100

This type of decimal terminates, or ends, when divided.

What is a terminating decimal?

200

How far away from zero a number is on a number line.

What is absolute value?

300

Any number that can be written as a ratio.

What is a rational number?

400

This decimal will repeat, or create a pattern, when divided.

What is a repeating decimal?

500

Numbers that are the same distance from zero on a number line. One is a positive number and one is a negative number.

What are opposites?

Adding Rational Numbers

100

3.15 + 2.25

What is 5.40?

200

0.38 + (-1.2)

What is -0.82?

300

9/25 + (-17/25)

What is -8/25?

400

-5/12 + 1/12

What is -1/3?

500

Find the sum.

-86 + 92

What is 6?

Subtracting Rational Numbers

100

8/11 - 3/11

What is 5/11 ?

200

- 4/13 - 8/13

What is -12/13 ?

300

-0.06 - (-0.86)

What is 0.8 ?

400

-10/24 - (-2/24)

What is -1/3 ?

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

15 divided by -0.2

What is -75?

500

-6.4 divided by -0.4

What is 16?