Minus
10-1
=9
1oo+200
=300
10×10
=100
20/5
=4
100+600
=700
80-52
=28
55+30
=85
5×4
=20
20/5
=4
5+5
=10
400-100
=300
117+53
=170
6×7
=42
10/2
=5
12×3
=36
900-132
=768
122+138
=260
3×6
=18
100/4
=25
0.5×22
=11
99-46
=53
1919+4567
=6486
25×3
=75
222/2
=111
100+999-99
=1009