题目内容

脱式计算:
5
7
×
2
3
÷1
3
7

②2
4
5
÷(1+
1
5

3
11
÷(
3
4
×
3
11
④12÷(
4
7
÷
3
35
⑤14÷1
3
4
×1
3
4
5
9
×6
1
5
×1
2
7
5
7
×
2
3
÷1
3
7

=
5
7
×
2
3
×
7
10

=
5
7
×
7
10
×
2
3

=
1
2
×
2
3

=
1
3


②2
4
5
÷(1+
1
5
),
=2
4
5
÷1
1
5

=
14
5
×
5
6

=
7
3


3
11
÷(
3
4
×
3
11
),
=
3
11
÷
9
44

=
4
3


④12÷(
4
7
÷
3
35
),
=12÷
20
3

=
9
5


⑤14÷1
3
4
×1
3
4

=14×
4
7
×
7
4

=14×(
4
7
×
7
4
),
=14×1,
=14;

5
9
×6
1
5
×1
2
7

=
31
9
×
9
7

=
31
7
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