问题
解答题
小明每分钟做9道口算题，小刚每分钟做的是小明的3倍．小刚每分钟比小明多做几道口算题？
答案
9×3-9，
=27-9，
=18（道）；
答：小刚每分钟比小明多做18道口算题．
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小明每分钟做9道口算题，小刚每分钟做的是小明的3倍．小刚每分钟比小明多做几道口算题？
9×3-9，
=27-9，
=18（道）；
答：小刚每分钟比小明多做18道口算题．
| 阅读理解。 | ||||||
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