7.6乘0.28加0.24乘2.8简便计算

分类: 作业答案 • 2022-01-09 18:01:21

问题描述：

答

7.6×0.28+0.24×2.8
=（7.6÷10）×（0.28×10）+0.24×2.8
=0.76×2.8+0.24×2.8
=（0.76+0.24）×2.8
=1×0.28
=0.28