2.5X9X0.25X0.9怎么简算?,
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2.5×9×0.25×0.9=2.5×0.9×2.5×0.9=2.5×2.5 ×0.9×0.9=6.25×0.81=6.25×(0.8+0.01)=5.0625
咨询记录 · 回答于2022-11-01
2.5X9X0.25X0.9怎么简算?,
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2.5×9×0.25×0.9=2.5×0.9×2.5×0.9=2.5×2.5 ×0.9×0.9=6.25×0.81=6.25×(0.8+0.01)=5.0625