谁知道35*62+47*38+12*12简便怎么算
问题描述:
谁知道35*62+47*38+12*12简便怎么算
答
35*62+47*38+12*12=35*62+(12+35)*38+12*12 =35*62+35*38+12*38+12*12 =35*(62+38)+12*(38+12) =35*100+12*50 =3500+600 =4100