43+55=
12+40=
41-22=
92-70=
99-23=
18+29+37=
29-13=
5×7=
19-14=
4×9=
86-11=
83-17-22=
72-30=
89-20=
7×3=
13+29=
3×0=
2×3-2=
8×6=
97-67=
17+38=
58-25=
70-54=
9×9-7=
□○□○□=□(个)
或□○□○□=□(个)
45+3=
45+32=
4×7=
7×9﹣9=
45+37=
5+26=
6×3=
6×7﹣6=
25﹣23=
60﹣8=
8×4=
9×9﹣36=
64﹣8=
64﹣18=
6×9=
5×7+6=
7×6+6=
6×7-6=
8×6-8=
6×5+6=
2×9+9=
9×3-9=
7×8-7=
7×9-9=
4×5+5=
2×2+2=
5×4-4=
5×2-2=
3×5-5=
5×2+5=
8×7= 6×9= 98-68= 64+26=
5×3+18= 8×9+7= 4×9-25= 5×7-15=