Add/Subtract Rational Numbers

Adding Decimals

100

7.6 + (-10.1) =

-2.5

200

-25.7 + 13.5

-12.2

300

10.1 + (-10.3)

-0.2

400

-28.9 + -2.7 + 33.55

1.95

500

46.5 + -98.9

-52.4

Subtracting Decimals

100

-11.1 - (-5.73)

-5.37

200

257.3 - 900.01

-642.71

300

-315.66 - (-315)

-0.66

400

62.1 - 125.43

-63.33

500

-1.1 - 66.25

-67.35

Adding Fractions

100

-41/5 + 3/4

-44 1/4

200

-28 7/8 + -2/7

-29  9/56

300

-1/5  + 7/10

1/2

400

2 1/2 + 9/10

3 2/5

500

-3 5/7 + -1 1/3

-5 1/21

Subtracting Fractions

100

-7/10 - 1/3

-1 1/30

200

15 7/8 - 5/6

15 1/24

300

-14/15 - (-2/3)

-4/15

400

-8 1/2 - 6/7

-9 5/14

500

-1/12  -  1/12

-1/6

Mixed Review

100

40.8 - 14  1/10

26.7

200

-1.68 - (-5/8)

-1.055

300

-2/5 - -13.25

12.85

400

26 1/2 + -33.45

-6.95

500

Another name for "opposite".

Additive Inverse