3+49=
52
10-20=
10 ha
10x10=
100
56+78=
144
50-34=
16
20x2=
40
324+220=
544
56-45=
11
100x100=
10000
2001+200=
2201
288-88=
200
200x200=
20000
10021+10000=
20021
20000-10000=
300x300=
300000
Press F11 Select menu option View > Enter Fullscreen for full-screen mode