126*25+168怎样简算

分类: 作业答案 • 2021-12-19 19:35:18

问题描述：

126*25+168怎样简算

答

126×25+168
=25×（4×31+2）+168
=25×4×31+25×2+168
=100×31+50+168
=3100+50+168
=3318
126×25+168
=25×2×63+168
=50×63+168
=3150+168
=3318