Y简便方法计算9.628.5+0.28541

分类: 作业答案 • 2021-12-20 01:40:09

问题描述：

Y简便方法计算9.6*28.5+0.285*41

答

=9.6*28.5+28.5*0.41
=28.5*(9.6+0.41)
=28.5*10.01
=28.5**(10+0.01)
=28.5*10+28.5*0.01
=285+0.285
=285.285

Y简便方法计算9.6*28.5+0.285*41