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0.25×4.783.4×9+3.42.7×4.3+2.7×5.71.25×11×0.84.6×102用简便方法计算的,0.25×4.78×4
题目内容:
0.25×4.78 3.4×9+3.4 2.7×4.3+2.7×5.7 1.25×11×0.8 4.6×102 用简便方法计算的,
0.25×4.78×4优质解答
0.25×4.78=0.25×(4+0.78)=0.25×4+0.25×0.78=1+0.195=1.1953.4×9+3.4=3.4×(9+1)=3.4×10=342.7×4.3+2.7×5.7=2.7×(4.3+5.7)=2.7×10=271.25×11×0.8=1.25×0.8×11=1×11=114.6×102 =4.6×(100+2)...
0.25×4.78×4
优质解答
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