直接算出1*2*...*9 然后小数点向左移九位就是了
0.1×0.2×0.3×0.4×0.5×0.6×0.7×0.8×0.9的巧算方法.
1个回答
相关问题
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0.9×0.5= 0.7×0.8= 0.6×1.2= 1.7×0.3= 0.1×9.2= 0.4×1.3= 0.7×1.
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2.7÷0.9= 0.75×4= 0.37×0.3= 12.5÷5= 0.8×5×0.6= 0÷0.02= 1.6×5×
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直接写出得数0.20×25=1.4×3=0.7×0.5=4.5×0.2=1.5×0.6=0.8×5=2.4×3=5×0.
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巧算1.9×2×0.2×0.5快
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口算．0.07÷O.7=5.4÷0.6=3.4×0.1=0.35×0.2=1.23×0.23×0=0.8-0.8×0.9
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用简便方法计算下面各题． 1.8×0.9+0.18 5.4×0.68+3.4×2×0.46 23.9-0.6×0.6-0
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用简便方法计算下面各题． 1.8×0.9+0.18 5.4×0.68+3.4×2×0.46 23.9-0.6×0.6-0
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怎么巧算0.49×0.22+258×0.0649＋5.3×6.49+64.9×0.19?
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计算，能简算的要简算．1.08×0.8÷0.9 3.4×5.3+6.6×5.3 0.25×12.5×0.8×4 7.28
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0.8×720×0.125 0.25×32×0.125 5.9×2.7＋3.57 42-3.8×5.9 12.5×4.8