18.3乘以0.25加5.3除0.4减7.13怎么算?
18.3乘以0.25加5.3除0.4减7.13怎么算?
1除以1加0除以12加12乘以1加0乘以12减12除12怎么算
(x减83乘1.05)乘以0.5除x加0.18等于25 求X?怎么算啊?
0.87乘以7.13加8.7乘以0.187加0.87怎么用简便方法算?
3/7乘以1/4加1/4乘以2/7加0.25乘以7分之1怎么算
1.2乘以5.7减去1.2加5.3乘以1.2的简便运算怎么算?
五年级 0.15乘以0.8乘以12.5加8乘以3乘以0.125怎么简便算
12.5乘以79加12.5乘以2减12.5简算怎么算
54乘以45加90乘以23怎么巧算
怎么简算13.5乘以10.1加6.5乘以9.9
7.5乘以23加31乘以2.5怎么简算
五分之二乘以十分之二加10分之9乘0.4减2除5乘10分之1