下面各题怎样简便就怎样计算。(1) ÷ × (2)4×0.8×2.5×1.25(3)
1个回答
(1)
÷
×
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×
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=
(2)4×0.8×2.5×1.25
=4×2.5×(0.8×1.25) =10
(3)
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(4)
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