(8.4乘以25乘以63%)除以(84乘以5乘以0.9)的简便运算?
问题描述:
(8.4乘以25乘以63%)除以(84乘以5乘以0.9)的简便运算?
答
(8.4乘以25乘以63%)除以(84乘以5乘以0.9)=84*5*0.9*5*0.7 / 84*5*0.9=5*0.7=3.5
答
(8.4乘以25乘以63%)除以(84乘以5乘以0.9)=(8.4÷84)*(25÷5)*(63%÷0.9)=0.1*5*0.7=0.35
答
8.4/84=0.1
25/5=5
63%/0.9=0.7
0.1*5*0.7=0.35
答
(8.4乘以25乘以63%)除以(84乘以5乘以0.9)=8.4*25*63%÷84÷5÷0.9=(8.4÷84)(25÷5)(63%÷0.9)=0.1*5*0.7=0.35