题目内容

能用简便方法计算的要简算.
32×125%×0.25
12.5-0.625一
3
8
4
9
×[
3
4
-(
7
16
-
1
4
)]
1÷[(
1
3
+
5
6
)÷
5
12
].

(1)32×125%×0.25,
=(4×8)×1.25×0.25,
=(8×1.25)×(4×0.25),
=10×1,
=10;

(2)12.5-0.625-
3
8

=12.5-(0.625+
3
8
),
=12.5-1,
=11.5;

(3)
4
9
×[
3
4
-(
7
16
-
1
4
)],
=
4
9
×[
3
4
-
7
16
+
1
4
],
=
4
9
×[
3
4
+
1
4
-
7
16
],
=
4
9
×[1-
7
16
],
=
4
9
×
9
16

=
1
4


(4)1÷[(
1
3
+
5
6
)÷
5
12
],
=1÷[
7
6
÷
5
12
],
=1÷
14
5

=
5
14
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