570*31+57*69简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 06:32:40
![570*31+57*69简便运算](/uploads/image/z/353755-19-5.jpg?t=570%2A31%2B57%2A69%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
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570*31+57*69简便运算
570*31+57*69简便运算
570*31+57*69简便运算
57*31+57*69
=57*31+57*69
=57*(31+69)
=57*(31+69)
=57*100
=5700
57*31+57*69
=57*(31+69)
=57*100
=5700
可以吗?