简便计算3.53×0.25+3.47

分类: 作业答案 • 2022-01-02 13:21:55

问题描述：

简便计算3.53×0.25+3.47

答

楼主是不是少打一个数字了?再怎么简便都不行啊
3.53×0.25+3.47
=(7-3.47)×0.25+3.47
=7/4-3.47/4+3.47×4/4
=(7-3.47+3.47×4)/4
=(7+3.47×3)/4
我的简便方法也就到此了
除非你后面带有1/4或者其它除以4的数字

答

3.53×0.25+3.47
=3.53/4+3.47
=0.8825+3.47
=4.3525

答

3.53×0.25+3.47
=（4-0.47）/4+3.47
=4/4-0.47/4+3.47
=1-0.1175+3.47
4.47-0.1175
=4.3525