题目内容

72×35+72×65﹦72×(
35
35
+
65
65
)是应用
乘法的分配律
乘法的分配律
,用字母表示为
(a+b)×c=a×c+b×c
(a+b)×c=a×c+b×c
分析:乘法分配律的意义:两个数的和与一个数相乘等于这个数分别乘以这两个数,再把所得积相加.
解答:解:72×35+72×65﹦72×(35+65)是应用乘法的分配律,
用字母表示为(a+b)×c=a×c+b×c.
故答案为:35,65,a+b)×c=a×c+b×c.
点评:解决此题的关键是乘法分配律的意义,根据乘法分配律进一步得出答案.
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