Front

-6.23 - 7.5

Back

-13.73

Front

9 + -6.73

Back

2.27

Front

-3/7 + 4/5

Back

13/35

Front

⁸/₁₅  +  (-⁶/₁₅)

Back

2/15

Front

- 1/3 + (-1/6)

Back

-1/2

Front

-1 1/4 + -2 1/2 =

Back

-3 3/4

Front

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

Back

3

Front

2.75 - (-1.25)

Back

4

Front

−0.15 − (−0.15) =

Back

0

Front

−6 + 9.2

Back

3.2