5 + 2 =
7
6 + 5 =
11
6 + (-5) =
1
-7 + 4 =
-3
8 + (-8) =
0
-3 + (-5) =
-8
-13 + (-4) =
-17
19 + (-4) =
15
-18 + (-7) =
-25
33 + (-17)
16
Press F11 Select menu option View > Enter Fullscreen for full-screen mode