0.79乘以0.46加7.9乘以0.24加11.4乘以0.079怎样简便计算?

0.79乘以0.46加7.9乘以0.24加11.4乘以0.079怎样简便计算? 66乘以0.88加33乘以0.24 怎么简便运算 9.99乘以22.2加33.3乘以3.34 9.99乘以22.2加33.3乘以3.34 9999乘以7加1111乘以37 26乘以187加169乘以2 111111乘以999999加999999乘以555555 一乘以二乘以三分之一加2乘以3乘以4分之一+3乘以4乘以5分之1+……+48乘以49乘以50分之1. 2000乘以1999减1999乘以1998加1998乘以1997减1997乘以1996,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 99乘以0.24加76乘以0.99用简便方法计算 52乘以76加47乘以76加76 1200乘以5加1800乘以15加2500乘以4加3000乘以2加5000除以27等于? 999乘以99加99 99乘以38加38. 1999乘以99加1999 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 1/2003乘以2004加1/2005乘以2006加1/2007乘以2008加1/2008乘以2009