79乘以12.5巧算

79乘以12.5巧算 2.5乘以3.2乘以12.5 12.5乘以79加12.5乘以2减12.5简算怎么算 巧算25乘以5乘以64乘以125怎么做? 2.5乘以12.5乘以0.8乘以0.4的简便计算 最后一个是0.8乘以0.25乘以0.4乘以12.5 0.5乘以12.5乘以2.5乘以128（要简便） 9乘以808乘以125巧算 79.9乘以0.126 6.05乘以8.6 8.07乘以1.3 0.79乘以20 2.98乘以6179.9乘以0.1266.05乘以8.68.07乘以1.30.79乘以202.98乘以6106.05乘以32（要竖式）必采纳谢谢 3333333333乘以9999999999巧算 巧算 6666乘以4444 12.3乘以0.99 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. 79乘以99乘以79怎么用简便计算? 3.14乘以3.14+68.6乘以1.314等于多少?巧算、要巧算!