65+72
137
57-33
24
9x7
63
3/10+2/10
5/10
345+234
579
679-345
334
30x9
270
5/9-1/9=
4/9
79+ 88
167
32-29
3
35x22
770
10 2/15+ 3 4/15
13 6/15
789+677
1,466
532-379
153
79x48
3,792
12 7/10- 5 3/10
7 4/10