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3
4
=
3×5
4×5
=
15
20
2
5
=
2×4
5×4
=
8
20
的过程是(  )
A、通分B、约分C、扩分
分析:根据通分的方法,把异分母分数化成大小与原来相等的同分母分数.据此解答.
解答:解:据分析可知:
3
4
=
3×5
4×5
=
15
20
2
5
=
2×4
5×4
=
8
20
的过程是通分.
故选:A.
点评:此题考查的目的是理解通分的意义掌握通分的方法.
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