10+50=
60
5-10-20-4
11
100+200+300=
600
1-30
29
5+2+1+1+20+40+10=
79
4-35=
31
1+1+1+1+1+1+2+2+2+2+2+2+2+2+2+10
34
40-10=
30
100+200+300+400+500=
5000
50-20=
Press F11 Select menu option View > Enter Fullscreen for full-screen mode