2.5×1.37+0.25×26.3简便计算2.89×1.23+2.89×0.77-2.89的简便运算!
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/31 03:09:37
2.5×1.37+0.25×26.3简便计算2.89×1.23+2.89×0.77-2.89的简便运算!2.5×1.37+0.25×26.3简便计算2.89×1.23+2.89×0.77-2.89的简
2.5×1.37+0.25×26.3简便计算2.89×1.23+2.89×0.77-2.89的简便运算!
2.5×1.37+0.25×26.3简便计算
2.89×1.23+2.89×0.77-2.89的简便运算!
2.5×1.37+0.25×26.3简便计算2.89×1.23+2.89×0.77-2.89的简便运算!
原式=2.89×（1.23+0.77）-2.89 【乘法分配律】
=2.89×2-2.89
相减得2.89×1.
=2.89
做任务~~
路过
2.89*(1.23+0.77-1)=2.89
2.5×1.37+0.25×26.3
=0.25×10×1.37+0.25×26.3
=0.25×(10×1.37+26.3)
=0.25×(13.7+26.3)
=0.25*40
=10
2.5×1.37+0.25×26.3简便计算2.89×1.23+2.89×0.77-2.89的简便运算!
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