问题 解答题
你认为第(  )种算法更合理,更简便一些.
A.
3
8
+
3
8
×
4
7
+
3
8
×
3
7

=
3
8
+
3
14
+
9
56

=
21
56
+
12
56
+
9
56

=
3
4
B.
3
8
+
3
8
×
4
7
+
3
8
×
3
7

=
3
8
+
3
8
×
4
7
+
3
7

=
3
8
+
3
8

=
3
4
C.
3
8
+
3
8
×
4
7
+
3
8
×
3
7

=
3
8
×(1+
4
7
+
3
7

=
3
8
×2
=
3
4
答案

3
8
+
3
8
×
4
7
+
3
8
×
3
7

=

3
8
×( 1+
4
7
+
3
7
),

=

3
8
×2,

=

3
4

故选:C.

选择题
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