Rational Numbers

Addition

100

-3 + 7

4

200

-5 + (-8)

-13

300

-8 + 11.2

3.2

400

2/5 + 1/5

3/5

500

2 1/3 + (-3 1/2)

-1 1/6

Subtraction

100

4 - 9

-5

200

-12 - 10

-22

300

-9 - (-1.3)

-7.7

400

5/6 - 1/2

1/3

500

4 3/4 - (- 5 1/2)

10 1/4

Multiplication

100

8(-8)

-64

200

-7(-4)

28

300

3(-2.7)

-8.1

400

3/5 * 1/2

3/10

500

-1 5/6 * 2 1/2

-4 7/12

Division

100

-100 / 4

-25

200

-64 / -8

8

300

9.6 / -3

-3.2

400

1/2 divided by 5

1/10

500

8 1/2 divided by 1/3

25 1/2

Converting

100

Change 4/5 into a decimal.

0.8

200

Change 0.23 into a percent.

23%

300

Which is greater, 0.525 or 51%?

0.525

400

Change 0.35 into a fraction 

7/20

500

Which is greater, 7 1/4 or 7.14?

7 1/4