下面這些算式怎樣簡便計(jì)算?
下面這些算式怎樣簡便計(jì)算?
17.48×37-174.8×1.9+17.48×82=?0.125×0.25×0.5×64=?
17.48×37-174.8×1.9+17.48×82=?0.125×0.25×0.5×64=?
數(shù)學(xué)人氣:185 ℃時(shí)間:2020-06-19 08:59:09
優(yōu)質(zhì)解答
17.48×37-174.8×1.9+17.48×82=17.48×37-17.48×19+17.48×82=17.48x(37-19+82)=17.48x100=17480.125×0.25×0.5×64=0.125×0.25×0.5×8x4x2=(0.125×8)x(0.25×4)x(0.5×2)=1x1x1=1
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