32+5⋅3=□+32; 54:9+□=6+9⋅8; 8⋅7+28=28+□; 81−7⋅4=9⋅9−□; □:(10−4)=72:8; 42:7−□=□−3

Решим примеры:

1. $$32 + 5 \cdot 3 = 32 + 15 = 47$$ $$47 = \boxed{15} + 32$$
2. $$6 + 9 \cdot 8 = 6 + 72 = 78$$ $$54 : 9 + \boxed{72} = 6 + 72 = 78$$
3. $$8 \cdot 7 + 28 = 56 + 28 = 84$$ $$84 = 28 + \boxed{56}$$
4. $$81 - 7 \cdot 4 = 81 - 28 = 53$$ $$9 \cdot 9 - \boxed{28} = 81 - 28 = 53$$
5. $$72 : 8 = 9$$ $$\boxed{54} : (10 - 4) = 54 : 6 = 9$$
6. $$42 : 7 - \boxed{3} = \boxed{3} - 3$$ $$6 - 3 = 3 - 3$$ $$3 = 0$$