题目内容
25×99×4=
9900
9900
．分析：25×99×4=99×（25×4），是先运用乘法交换律把25和99交换了位置，然后运用乘法结合律把25和4进行了结合；据此解答．
解答：解：25×99×4
=99×（25×4）
=99×100
=9900
故答案为：9900．
=99×（25×4）
=99×100
=9900
故答案为：9900．
点评：运算定律是常用的简便运算的方法，要熟练掌握，灵活运用．
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