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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×

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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×
(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)
=0.1×10×0.0001
=0.0001