题目内容

8
2
5
+3
3
10
-8.25
4
3
5
×38.7+4.6+4
3
5
×0.3
3
4
÷3-0.1〕×〔1-
1
3
1.7÷[8
1
3
-(6.6+5
2
5
÷9)]
(1)8
2
5
+3
3
10
-8.25,
=8.4+3.3-8.25,
=8.4-8.25+3.3,
=0.15+3.3,
=3.45;

(2)4
3
5
×38.7+4.6+4
3
5
×0.3,
=4
3
5
×38.7+4
3
5
+4
3
5
×0.3,
=(38.7+1+0.3)×4
3
5

=40×
23
5

=184;

(3)(
3
4
÷3-0.1)×(1-
1
3
),
=(
3
4
×
1
3
-
1
10
)×
2
3

=(
1
4
-
1
10
)×
2
3

=
3
20
×
2
3

=
1
10


(4)1.7÷[8
1
3
-(6.6+5
2
5
÷9)],
=1.7÷[8
1
3
-(6
3
5
+
27
5
×
1
9
)],
=1.7÷[8
1
3
-(6
3
5
+
3
5
)],
=1.7÷[8
1
3
-7
1
5
],
=1.7÷
17
15

=1.7×
15
17

=1
1
2
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