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1、一、混合运算840(120195)15557(18626)23375（2510）15336（3629）662（3001455）35（320170）50二、简便计算1. 加法交换结合律：583942617534125366125753202. 乘法交换结合律（一）：5289212558298125432541255024212583. 乘法交换结合律（二）：125321255612516125 644. 乘法分配律（一）：347234287487523537653731693131341334 35. 乘法分配律（二）：389938752997510299102399396. 乘法分配律（三）：
2、125（880 ）（804）258（1259）（204）2532 （2003）（12517）8(1002)99102（1001）7. 乘法分配律（四）：4610148125994612588489925 243021532125“”“”At the end, Xiao Bian gives you a passage. Minand once said, people who learn to learn are very happy people. In every wonderful life, learning is an eternal theme. As a professional
3、 clerical and teaching position, I understand the importance of continuous learning, life is diligent, nothing can be gained, only continuous learning can achieve better self. Only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. This document is also edited by my studio professionals, there may be errors in the document, if there are errors, please correct, thank you!
