118.75+1250.19怎样简便计算要飞快,慢了不要.

分类: 作业答案 • 2022-01-02 13:26:55

问题描述：

11*8.75+125*0.19怎样简便计算
要飞快,慢了不要.

答

11*8.75+125*0.19
=11*125*0.07+125*0.19
=125*(0.77+0.19)
=125*0.96
=125*(1-0.04)
=125-5
=120

答

11*8.75+125*0.19
=11*1.25*7+1.25*19
=77*1.25+1.25*19
=1.25*（77+19）
=1.25*96
=1.25*8*12
=120

11*8.75+125*0.19怎样简便计算要飞快,慢了不要.