题目内容

5
12
-
7
24
)×24
7
10
×
5
3
+
7
10
÷3
4
9
÷(
2
3
÷
3
11
)×
11
4
7
9
-
2
5
-
2
3
×
9
10
1
10
+
1
17
)×13+4÷17
8
15
÷[(
1
3
-
1
4
)×4].
(1)(
5
12
-
7
24
)×24,
=
5
12
×24-
7
24
×24,
=10-7,
=3;

(2)
7
10
×
5
3
+
7
10
÷3,
=
35
30
+
7
30

=1.4;

(3)
4
9
÷(
2
3
÷
3
11
)×
11
4

=
4
9
÷
22
9
×
11
4

=
4
9
×
9
22
×
11
4

=
1
2


(4)
7
9
-
2
5
-
2
3
×
9
10

=
7
9
-
2
5
-
3
5

=
7
9
-(
2
5
+
3
5
),
=
7
9
-1,
=-
2
9


(5)(
1
10
+
1
17
)×13+4÷17,
=
1
10
×13+
1
17
×13+
4
17

=1.3+(
13
17
+
4
17
),
=1.3+1,
=2.3;

(6)
8
15
÷[(
1
3
-
1
4
)×4],
=
8
15
÷[
1
12
×4],
=
8
15
÷
1
3

=
8
5
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