2490.3+24.93+2.4930+0.249300 简便运算...

分类: 作业答案 • 2022-06-15 12:59:23

问题描述：

249*0.3+24.9*3+2.49*30+0.249*300 简便运算...

答

249*0.3+24.9*3+2.49*30+0.249*300
= 249 x 0.3 + 249 x 0.3 + 249 x 0.3 + 249 x 0.3
= 249 x 0.3 x 4
= 298.8

249*0.3+24.9*3+2.49*30+0.249*300 简便运算...