簡單數學

Front

3.2 + 0.6

Back

3.8

Front

4.2 + 2.3

Back

6.5

Front

22.3 + 44.3

Back

66.6

Front

6.6 + 2.2

Back

8.8

Front

8.2 + 2.2

Back

10.3

Front

1 + 1

Back

2

Front

5 + 3

Back

8

Front

10 + 5

Back

15

Front

7 + 2

Back

9

Front

3 + 4

Back

7