79乘以12.5巧算

12.5乘以79加12.5乘以2减12.5简算怎么算 最后一个是0.8乘以0.25乘以0.4乘以12.5 2.5乘以12.5乘以0.8乘以0.4的简便计算 9乘以808乘以125巧算 9.8乘以65.2乘以1.25减12.5乘以0.625乘以18怎样简算 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 43.2除以8乘以12.5 递等式,巧算. 2乘以3乘以5乘以7乘以11乘以13乘以17除以（2004-2）等于多少 巧算、要巧算. 巧算 94乘以1999减93乘以2000 39乘以37-13乘以3的4次方,巧算 56乘以125加上125乘以25巧算 57乘以44加44乘以44减44巧算