7.2×0.25简便运算
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7.2×0.25简便运算
7.2×0.25简便运算
7.2×0.25简便运算
7.2×0.25
= 1.8 ×4 × 0.25
= 1.8 ×(4 × 0.25)
= 1.8 × 1
= 1.8
7.2×0.25简便运算
7.2×0.25简便运算
7.2×0.25简便运算
7.2×0.25
= 1.8 ×4 × 0.25
= 1.8 ×(4 × 0.25)
= 1.8 × 1
= 1.8