简便计算:7.81减(3.81减1.65)+2.25
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/16 20:26:36
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简便计算:7.81减(3.81减1.65)+2.25
简便计算:7.81减(3.81减1.65)+2.25
简便计算:7.81减(3.81减1.65)+2.25
7.81减(3.81减1.65)+2.25
=7.81 - 3.81 +1.65 +2.25
=4+ 3.9
=7.9
7.81-(3.81-1.65)+2.25
=(7.81-3.81)+(1.65+2.25)
=4+3.9
=7.9