(0.72*0.4*3.5)/(0.9*0.2*7)简算

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(0.72*0.4*3.5)/(0.9*0.2*7)简算(0.72*0.4*3.5)/(0.9*0.2*7)简算(0.72*0.4*3.5)/(0.9*0.2*7)简算(0.72*0.4*3.5)/(

(0.72*0.4*3.5)/(0.9*0.2*7)简算
(0.72*0.4*3.5)/(0.9*0.2*7)简算

(0.72*0.4*3.5)/(0.9*0.2*7)简算
(0.72*0.4*3.5)/(0.9*0.2*7)
=(0.72÷0.9)×(0.4÷0.2)×(3.5÷7)
=0.8×2×0.5
=0.8×(2×0.5)
=0.8×1
=0.8

0.72/0.9=0.8
0.4/0.2=2
3.5/7=0.5
0.8*2*0.5=0.8

=(0.72x0.2x2x3.5)/(0.9x0.2x2x3.5)
=0.72/0.9
=72/90
=8/10
=4/5 或=0.8

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