7.69*2.1+2.1*1.31+2.1怎样简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 20:44:11
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7.69*2.1+2.1*1.31+2.1怎样简便计算
7.69*2.1+2.1*1.31+2.1怎样简便计算
7.69*2.1+2.1*1.31+2.1怎样简便计算
7.69*2.1+2.1*1.31+2.1
=2.1*(7.69+1.31+1)
=21
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 20:44:11
7.69*2.1+2.1*1.31+2.1怎样简便计算
7.69*2.1+2.1*1.31+2.1怎样简便计算
7.69*2.1+2.1*1.31+2.1怎样简便计算
7.69*2.1+2.1*1.31+2.1
=2.1*(7.69+1.31+1)
=21