38.08÷13.6*0.72 4.07×8.6+9.125 8×7.2×1.2 能簡便計算嗎?
38.08÷13.6*0.72 4.07×8.6+9.125 8×7.2×1.2 能簡便計算嗎?
如果能要怎么算?
如果能要怎么算?
數(shù)學人氣：590 ℃時間：2020-04-21 02:51:31
優(yōu)質(zhì)解答
38.08÷13.6*0.72 =（40.8-2.72）÷13.6×0.72=40.8÷13.6×0.72-2.72÷13.6×0.72=3×0.72-0.2×0.72=2.16-0.144=2.0164.07×8.6+9.125=（4+0.07）×8.6+9.125=4×8.6+0.7×8.6+9.125=34.4+0.602+9.125=35.002+9.12...這些用口算能算出來嗎？要用口算的才最簡便啊有點難度，看你的口算能力了，呵呵。這幾題應該不能簡便吧是啊
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