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题目列表(包括答案和解析)

1
3
×
3
10
=
5
7
=
9
8
×
8
3
=
14
13
÷28
=
4
7
÷4
=
12×
4
3
=
25÷
5
11
=
4
13
×
5
6
=

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1
3
×
3
10
=
5
7
=
9
8
×
8
3
=
14
13
÷28
=
4
7
÷4
=
12×
4
3
=
25÷
5
11
=
4
13
×
5
6
=

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4
7
×
5
12
÷
4
9
28÷(
2
3
÷
4
3
5
9
×
3
8
[
3
4
÷(
1
2
×
1
3
)]×
2
9
(0.75-
3
16
)×(
2
9
+
1
3
[1-(
1
4
+
3
8
)]÷
1
4

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求未知数x

x×13=728         x÷28=43

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用竖式计算.
236×43=
208×56=
318÷13=
196÷28=

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