Условие:
1. 7*9
2. 8*7
3. 8*9
4. 8*6
5. 5*9
6. 32:4
7. 56:7
8. 72:9
9. 63:7
10. 40:8
11. 54:6
12. 80:4
13. 60:60
14. 80*10
15. 52*0
Решение:
\[\boxed{\mathbf{1.}}\]
\[7 \cdot 9 = 63\]
\[\boxed{\mathbf{2.}}\]
\[8 \cdot 7 = 56\]
\[\boxed{\mathbf{3.}}\]
\[8 \cdot 9 = 72\]
\[\boxed{\mathbf{4.}}\]
\[8 \cdot 6 = 48\]
\[\boxed{\mathbf{5.}}\]
\[5 \cdot 9 = 45\]
\[\boxed{\mathbf{6.}}\]
\[32\ :4 = 8\]
\[\boxed{\mathbf{7.}}\]
\[56\ :7 = 8\]
\[\boxed{\mathbf{8.}}\]
\[72\ :9 = 8\]
\[\boxed{\mathbf{9.}}\]
\[63\ :7 = 9\]
\[\boxed{\mathbf{10.}}\]
\[40\ :8 = 5\]
\[\boxed{\mathbf{11.}}\]
\[54\ :6 = 9\]
\[\boxed{\mathbf{12.}}\]
\[80\ :4 = 20\]
\[\boxed{\mathbf{13.}}\]
\[60\ :60 = 1\]
\[\boxed{\mathbf{14.}}\]
\[80 \cdot 10 = 800\]
\[\boxed{\mathbf{15.}}\]
\[52 \cdot 0 = 0\]