0.495×250+495×0.24+51×4.95

分类: 作业答案 • 2023-01-16 09:32:02

问题描述：

答

0.495×250+495×0.24+51×4.95
=495×0.25+495×0.24+0.51×495
=495×(0.25+0.24+0.51)
=495×1
=495