25×99×4=
9900
9900
分析:25×99×4=99×(25×4),是先運(yùn)用乘法交換律把25和99交換了位置,然后運(yùn)用乘法結(jié)合律把25和4進(jìn)行了結(jié)合;據(jù)此解答.
解答:解:25×99×4
=99×(25×4)
=99×100
=9900
故答案為:9900.
點評:運(yùn)算定律是常用的簡便運(yùn)算的方法,要熟練掌握,靈活運(yùn)用.
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