20 + 70 =
90
76 + 54 =
130
20 - 10 =
10
18 - 9 =
9
34 + 43 =
77
20 + 15 =
35
30 - 15 =
15
50 - 25 =
25
99 + 2 =
101
56 + 35 =
91
76 - 34 =
42
100 - 50 =
50
92 + 20 =
112
100 + 35 =
135
92- 74 =
18
100 - 64 =
36
Press F11 Select menu option View > Enter Fullscreen for full-screen mode