2.5×(10.8-9.76)怎样简算

分类: 作业答案 • 2022-01-02 19:20:00

问题描述：

2.5×(10.8-9.76)怎样简算

答

2.5×(10.8-9.76)
=2.5×[(10+0.8)-(10-0.24)]
=2.5×[(10-10)+(0.8+0.24)]
=2.5×(0.8+0.24)
=2.5×1.04
=2.5×(1+0.04)
=2.5+0.1
=2.6

答

2.5×(10.8-9.76)=2.5X(10-9)+2.5X(0.8-0.76)=2.5+0.1=2.6