题目

8.4×3.6+1.28+0.96×0.5怎么用简便算法算

提问时间：2020-10-30

答案

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