Adding Fractions
Adding Decimals
Subtracting Fractions
Subtracting Decimals
Miscellaneous
100

-1/5 + -3/5

-4/5

100

8.4 + 3.9

12.3

100

3/10 - 7/10 (simplify your answer)

-2/5

100

7 - 0.55

6.45

100

When you see a subtraction symbol, you should

Rewrite the problem using Keep Change Change

200

2/7 + -6/7

-4/7

200

0.078 + -0.3

-0.222

200

8/15 - 1/5 (Simplify your answer)

1/3

200

3.7 - (-0.42)

4.12

200

When you add two negative decimals, the answer will be

negative

300

-2/3 + -2/5

-1 1/15 or -16/15

300

-3.5 - 0.6

-4.1

300

2/9 - (- 1/18)

5/18

300

-9.8 - 14.05

-23.85

300

The lowest common denominator for -7/10 and 1/6 would be

30

400

-16/9 + 1/3

-13/9

400

6.5 - (-0.789)

7.289

400

-6/5 - 7/10

-19/10

400

0.3004 - 1.9

-1.5996

400

(-10)(-2)(3)

positive 60

500

6/5 + (-11/4)

-31/20

500

-2.5 - (-3.1)

0.6

500

-9/4 - (-10/3)

13/12

500

-12 - (-0.781)

-11.219

500

(-12 + 8)/2

-2

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