15+5
20
13 - 10
3
8 + 8
16
38 + 40
78
10 - 4
6
2 + 6
8
17 + 81
98
98 - 72
26
20 - 10
10
55 + 38
93
79 - 74
5
18 - 9
9
66 + 29
95
553 - 442
111
6 + 6
12
Press F11 Select menu option View > Enter Fullscreen for full-screen mode