2 + 3 =
5
3 - 2 =
12 + 2 =
14
17 - 1 =
16
2 + 4 =
6
4 - 1 =
3
17 + 3 =
20
18 - 8 =
10
7 + 0 =
8 - 6 =
2
10 + 6 =
11 - 0 =
11
Press F11 Select menu option View > Enter Fullscreen for full-screen mode