题目内容

498+9870÷35
420.5-294÷2.8×2.1
2
3
-
2
5
)÷(
1
8
+
5
12

2
3
÷(
3
4
+
1
12
×
4
5

3
5
÷[(
1
4
+
2
7
)×
7
20
].
(1)498+9870÷35
=498+282,
=780;

(2)420.5-294÷2.8×2.1
=420.5-220.5,
=200;

(3)(
2
3
-
2
5
)÷(
1
8
+
5
12

=
4
15
÷
13
24

=
32
65


(4)
2
3
÷(
3
4
+
1
12
×
4
5

=
2
3
÷(
3
4
+
1
15
),
=
2
3
÷
49
60

=
40
49


(5)
3
5
÷[(
1
4
+
2
7
)×
7
20
].
=
3
5
÷[
15
28
×
7
20
],
=
3
5
÷
3
16

=
16
5
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网