84+68÷4×三脱式计算。

2024-12-17 01:47:13
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回答1:

(1)原式=750×0.84 =630 (2)原式=(5 - )× = × = (3)原式=( + )÷ = ÷ = (4)原式=7.2÷[3.2× ] =7.2÷0.8 =9