87+3
90
97-78
19
2 × 9
18
13/2
6.5
67+34
101
78-23
55
7x3
21
21/3
7
67+90
157
1000-800
200
10 × 11
110
23/4
5.75
1900+676
2576
89-54
44
23x5
115
16/8
2
8549+545
9094
678-457
221
10 × 13
130
15/5
3