5.68乘以0.47加0.63乘以5.68减5.68乘以0.1
5.68乘以0.47加0.63乘以5.68减5.68乘以0.1
2000乘以1999减1999乘以1998加1998乘以1997减1997乘以1996,简算
2009加2009乘以2008乘以0.25加2008乘以2009乘以0.75减8乘以2009乘以0.125乘以2008
5.68乘以0.99加0.0568的简便计算
20乘以20减19乘以19加18乘以18减17乘以17加...加2乘以2减1乘以1的结果
5.6乘以9加56乘以0.1简便计算
99乘以98减98乘以97加96乘以95减95乘以94加.加6乘以5减5乘以4加3乘以2减2乘以1等于多少
134乘以56减134加45乘以134
57乘以44加44乘以44减44巧算
用简便方法计算 165乘以122加24乘以122加2乘以122减191乘以122
124乘以38加65乘以124加76乘以110减76乘以7简便计算
3乘以a乘以b的平方加6乘以a的平方乘以b减3乘以a乘以b的因式分解