100-72=
72÷9=
72+18=
24÷3=
7×0=
20÷4=
6×8=
12÷2=
66÷8=
45÷7=
8×3=
40÷5=
29+49=
56÷8=
9×6=
28÷7=
83-54=
63÷7=
45+345+30 58-358-30 50+1717+50
69-2187-20 3+5555-3 30个一3个十
23+35= 76-73= 88-72= 6+43=
26÷4=
72÷8=
3×9=
34÷8=
42÷6=
29+17=
2×7=
87-20=
35÷5=
6×4=
45+23=
24÷8=
87-70=
75+9=
54÷6=
9×8=