=7×8×4.1×1.25
=(7×4.1)×(8×1.25)
=28.7×10
=287
56×4.1×125 簡便計算
56×4.1×125 簡便計算
數(shù)學人氣:906 ℃時間:2020-01-16 17:12:00
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