简便运算 (1)17.48×37-174.8×1.9+1.748×820 (2)0.5×1.6×0.02×1.25×0.2×0.025.
简便运算
(1)17.48×37-174.8×1.9+1.748×820
(2)0.5×1.6×0.02×1.25×0.2×0.025.
(1)17.48×37-174.8×1.9+1.748×820
(2)0.5×1.6×0.02×1.25×0.2×0.025.
数学人气:165 ℃时间:2019-08-20 13:35:32
优质解答
(1)17.48×37-174.8×1.9+1.748×820=17.48×37-17.48×19+17.48×82=17.48×(37-19+82)=17.48×100=1748(2)0.5×1.6×0.02×1.25×0.2×0.025=(0.5×0.2)×(1.25×8)×(0.02×0.2×0.025)=0.1×10×0.0...
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