Adding and subtracting rational numbers

Front

-31 + -7

Back

-38

Front

27 + (-83)

Back

-56

Front

-7.8 + (-0.8)

Back

-8.6

Front

5/8 − (− 7/8)

Back

1 1/2

Front

7/10 - 9/10

Back

-1/5

Front

-13 - (-4) =

Back

-9

Front

5/8 − (− 7/8)

Back

1 1/2

Front

When adding rational numbers with the same sign, you must:

Back

Add together and keep the sign

Front

1/4 - 5/6

Back

- 7/12

Front

When adding decimals with different signs you...

Back

subtract and take the sign of the larger number