精英家教网 > 小学数学 > 题目详情
5
7
×
1
3
+
5
7
×
2
3
=(  )
分析:应用乘法分配律简便计算,即可得解.
解答:解:
5
7
×
1
3
+
5
7
×
2
3

=
5
7
×(
1
3
+
2
3
),
=
5
7
×1,
=
5
7

故选:A.
点评:此题主要考查分数的四则混合运算的运算顺序和应用运算定律进行简便计算.
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