5. 9.4 8.4 7.4 32:4 14:7 24:6 20:4 36:9 28:4 42 + (20 - 8) 50 - (17 - 9) 70 - (38 + 7)

Решение: $$9 \cdot 4 = 36$$ $$8 \cdot 4 = 32$$ $$7 \cdot 4 = 28$$ $$32 : 4 = 8$$ $$14 : 7 = 2$$ $$24 : 6 = 4$$ $$20 : 4 = 5$$ $$36 : 9 = 4$$ $$28 : 4 = 7$$ $$42 + (20 - 8) = 42 + 12 = 54$$ $$50 - (17 - 9) = 50 - 8 = 42$$ $$70 - (38 + 7) = 70 - 45 = 25$$ Ответ: 36 32 28 8 2 4 5 4 7 54 42 25