7+2=
9
9-4
5
12-9
3
346-219
127
33+66
99
2+4=
6
2-1
1
97-36
61
521-396
125
25+75
100
4+6
10
42-27
15
764-394
370
67+31
98
2+1=
8-7
55-33
22
127-119
8
31+12
43
6+3
3-3
0
99-97
2
491-141
350
45+39
84
Press F11 Select menu option View > Enter Fullscreen for full-screen mode