题目内容
5+5+5+10+10=
5
5
×7
7
．分析：根据乘法的意义，求几个相同加数的和的简便运算叫做乘法，把原式转化为：5+5+5+5+5+5+5=5×7．
解答：解：5+5+5+10+10，
=5+5+5+5+5+5+5，
=5×7．
故答案为：5，7．
=5+5+5+5+5+5+5，
=5×7．
故答案为：5，7．
点评：此题是整数乘法意义的实际应用，考查目的是熟练掌握乘法的意义，并能够根据乘法的意义解决有关的实际问题．
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