00:00:00
18
- 9 + 9 =
24
- 27 - 3 =
33
- 30 + 3 =
20
- 10 + 10 =
45
- 49 - 4 =
29
- 21 + 8 =
37
- 32 + 5 =
32
- 37 - 5 =
28
- 25 + 3 =