Question

7142.85除以3.7除以2.7乘1.7乘0.7的简便计算

Answer 1

7142.85÷3.7÷2.7×1.7×0.7=7142.85×1.7×0.7×1/3.7×1/2.7=2380.95×1.7×0.7×1/3.7×1/0.9
=793.65×1.7×0.7×1/3.7×1/0.3=2645.5×1.7×0.7×1/3.7=715×1.7×0.7=715×1.19
=715×（1+0.2-0.01）=715+715×0.2-715×0.01=715+143-7.15=850.85

Answer 2

7142.85/3.7/2.7*1.7*0.7
=7142.85/（3.7*2.7）*1.7*0.7
=71428.5/（37*27）*17*7
=71428.5/（111*9）*17*7
=71428.5/9/111*17*7
=71.5*17*7
=85085