36.5X2.5+2.65X75（简便计算）要算式和过程

Question

如题所述

Answer 1

36.5X2.5+2.65X75=36.5X2.5+(2.5+0.15)X(63.5+11.5)=36.5X2.5+63.5X2.5+2.5X11.5+0.15X75=(36.5+63.5)X2.5+2.5X11.5+2.5X0.15X30=250+2.5X(11.5+4.5)=250+2.5X16=250+2.5X4X4=250+40=290