8.4×3.6+1.28+0.96×0.5怎么用简便算法算

分类: 作业答案 • 2022-08-06 18:22:18

问题描述：

答

8.4×3.6+1.28+0.96×0.5
=0.4×21×0.4×9+0.16×8+0.16×6×0.5
=189×0.16+0.16×(8+3)
=0.16×(189+11)
=0.16×200
=32