五年级数学上册简便计算练习汇总

五年级数学上册简便计算练习汇总


简介:
3.29+0.73+2.27         3.29-0.73-2.27        =3.29+(0.73+2.27)      =3.29-(0.73+2.27)      =3.29+3       =3.29-3        =6.29 =0.29 (加法结合律) (减法的性质) 7.5+2.5-7.5+2.5 7.325-3.29-3.325   =(7.5-7.5)+(2.5+2.5) =7.325-3.325-3.29  =0+5 =4-3.29  =5 =0.71