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乘法运算律是指:(1)乘法交换律:ab=ba;(2)乘法结合律:(ab)c=a(bc);(3)分配律:a(b+c)=ab+ac.应用乘法运算律解题,贵在灵活.现举几例说明.例1计算:(-5/6)(+2.4)(+3/5).分析有些同学不能灵活应用乘法运算律来解题,而是把题中
The law of multiplication operation is: (1) The law of multiplication exchange: ab = ba; (2) The law of multiplication and combination: (ab) c = a Example 1 Calculated: (- 5/6) (+ 2.4) (+ 3/5). Analysis Some students can not flexibly apply the law of multiplication to solve the problem Question, but the question