简便运算,过程及答案
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/01 07:28:05
xPn@*RQ;/gN7h
4q "VH,b
5Jt_`ݨU[f|[|>?]^-Nϯ_V]]y{C!l]Li -[{S׃N UfN1T/(d\kJd}(ӏŶxlWp4R0l
߷kH4
~.:I
简便运算,过程及答案
简便运算,过程及答案
简便运算,过程及答案
=2.4*20.6+20.6*7.6+12.5*7.6
=(2.4+7.6)*20.6+12.5*4*1.9
=10*20.6+50*1.9
=206+95
=301
33.1×(10-2.4)+2.4×20.6=331-33.1×2.4+20.6×2.4=331-(33.1-20.6)×2.4=331-12.5×2.4=331-12.5×4×0.6=331-50×0.6=331-30=301
=2.4x20又3/5+33.1x(7.6+2.4)-33.1x2.4二(20.6-33.1)x2.4+331二331-12.5x2.4二331-30=301