4.5乘以3.6加上5.2乘以0.35的简便运算

分类: 作业答案 • 2021-12-06 20:40:00

问题描述：

答

4.5×3.6+5.2×0.35
=4.5×2×1.8+2.6×2×0.35
=9×1.8+2.6×7
=9×9×0.2+18.2
=16.2+18.2
=34.4