Adding & Subtracting Rational Numbers

Adding Fractions

100

-1/3 + 2/3

1/3

200

5/6 + (2/3)

9/6 or 3/2 or 1 1/2

300

-7/9 + 4/9

-3/9

400

1/8 + (-3/5)

-19/40

500

-7/8 + 1/3

-13/24

Subtracting Fractions

100

1/2 - 1/4

1/4

200

3/8 - (-1/8)

4/8 or 1/2

300

-2/5 - ( -1/5)

-1/5

400

1/7 - (3/14)

-1/14

500

-3/5 - (-2/3)

1/15

Adding Decimals

100

-13.4 + 8.6

-4.8

200

7.51 + 22.08

29.59

300

-41.90 + 22

-19.9

400

117.4 + (-8.93)

108.47

500

- 328.17 + 63.40

-264.77

Subtracting Decimals

100

-3.7 - 14.9

-18.6

200

22.43 - 4.07

18.36

300

-81.36 - 41.93

-123.29

400

7.85 - ( -31.03)

38.88

500

206.14 - 131.78

74.36

Adding/Subtracting Integers

100

-9 + 9

0

200

-8 - 10

-18

300

30 + (-12)

18

400

-12 + (-90)

-102

500

27 + (-8)

19