题目内容

(1)〔14
1
3
-(3.78-3.78÷1
2
7
)×1〕÷3.2
(2)4
4
5
×1
11
24
+2
2
7
÷
16
21
+29×
1
2
+5.7×2.
(1)[14
1
3
-(3.78-3.78÷1
2
7
)×1]÷3.2,
=[14
1
3
-(3.78-3.78×
7
9
)×1]÷3.2,
=[14
1
3
-3.78×(1-
7
9
)×1]÷3.2,
=[14
1
3
-3.78×
2
9
×1]÷3.2,
=[14
1
3
-0.84]÷3.2,
=[14
1
3
-
21
25
17
5

=
334
25
×
5
17

=
334
85


(2)4
4
5
×1
11
24
+2
2
7
÷
16
21
+29×
1
2
+5.7×2,
=
24
5
×
35
24
+
16
7
×
21
16
+29×
1
2
+11.4,
=7+3+14.5+11.4,
=35.9.
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