递等式计算,能简便的要简便计算(求学霸帮忙) 34.8÷2.5 17.48×3
递等式计算,能简便的要简便计算(求学霸帮忙)34.8÷2.517.48×37-174.8×7.9+1.748×8204.48÷2.5×0.0412.5×0.48×0.25...
递等式计算,能简便的要简便计算(求学霸帮忙)
34.8÷2.5 17.48×37-174.8×7.9+1.748×820
4.48÷2.5×0.04 12.5×0.48×0.25 展开
34.8÷2.5 17.48×37-174.8×7.9+1.748×820
4.48÷2.5×0.04 12.5×0.48×0.25 展开
1个回答
2015-10-05 · 知道合伙人教育行家
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34.8÷2.5
=(34.8×4)÷(2.5×4)
=139.2÷10
=13.92
17.48×37-174.8×7.9+1.748×820
=17.48×37-17.48×79+17.48×82
=17.48×(37-79+82)
=17.48×40
=699.2
4.48÷2.5×0.04
=1.792×0.04
=0.07168
12.5×0.48×0.25
=(12.5×0.8)×(0.6×0.25)
=10×0.15
=1.5
=(34.8×4)÷(2.5×4)
=139.2÷10
=13.92
17.48×37-174.8×7.9+1.748×820
=17.48×37-17.48×79+17.48×82
=17.48×(37-79+82)
=17.48×40
=699.2
4.48÷2.5×0.04
=1.792×0.04
=0.07168
12.5×0.48×0.25
=(12.5×0.8)×(0.6×0.25)
=10×0.15
=1.5
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