Subtraction
35-23=
12
5+9=
14
5x5=
25
6+4=
10
5-1=
4
100-50=
50
9+8=
17
1x1=
1
15+11=
26
10-8=
2
52-12=
40
100+150=
250
2x2=
4
90+25=
115
60-40=
20
42-25=
17
250+350=
600
3x3=
9
65+25=
90
55-35=
20
1000-999=
1
1000+1000=
2000
4x3=
12
80+65=
145
11-2=
9