2
5
=
2
5×5
=
2
25
×
×
.(判斷對錯)
分析:根據(jù)分數(shù)乘整數(shù)計算的方法:分子與整數(shù)相乘的積做分子,分母相乘的積做分母進行求解.
解答:解:5×
2
5
=
5×2
5
=
10
5
=2;
所以原題計算錯誤.
故答案為:×.
點評:本題考查了分數(shù)乘整數(shù)的計算方法,注意把結(jié)果化成最簡分數(shù).
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