问题 解答题
脱式计算,能简算的要简算
3
7
÷
5
7
×
7
15
6
13
÷7+
1
7
×
8
13
2
7
+
5
7
×
1
5
-
1
14
1
56
÷(
3
14
÷
6
13
答案

(1)

3
7
÷
5
7
×
7
15

=

3
5
×
7
15

=

7
25

(2)

6
13
÷7+
1
7
×
8
13

=

6
13
×
1
7
+
1
7
×
8
13

=(

6
13
+
8
13
)×
1
7

=

14
13
×
1
7

=

2
13

(3)

2
7
+
5
7
×
1
5
-
1
14

=

2
7
+
1
7
-
1
14

=

3
7
-
1
14

=

5
14

(4)

1
56
÷(
3
14
÷
6
13
),

=

1
56
÷(
3
14
÷
6
13
),

=

1
56
÷
13
28

=

1
26

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