6. 28+42:7-6 96-72:9+15 32+56:8-7 100-7*8 90-8*8 80-9*8 74:□= 8 (ост. □) 65:□=7 (ост. □) 85:□= 9 (ост. □)

Решим примеры: 1) $$28 + 42 : 7 - 6 = 28 + 6 - 6 = 34 - 6 = 28$$ 2) $$96 - 72 : 9 + 15 = 96 - 8 + 15 = 88 + 15 = 103$$ 3) $$32 + 56 : 8 - 7 = 32 + 7 - 7 = 39 - 7 = 32$$ 4) $$100 - 7 \cdot 8 = 100 - 56 = 44$$ 5) $$90 - 8 \cdot 8 = 90 - 64 = 26$$ 6) $$80 - 9 \cdot 8 = 80 - 72 = 8$$ 7) $$74 : 9 = 8$$ (ост. 2) 8) $$65 : 9 = 7$$ (ост. 2) 9) $$85 : 9 = 9$$ (ост. 4)