题目内容

计算下面各题,能简算的要简算.
27×
1
4
+73÷4
[
1
2
-(
3
4
-
1
2
)]÷
1
16
3
4
-
3
8
-
1
6
)×24
3
5
-
2
5
×(
4
5
-
1
20
(1)27×
1
4
+73÷4,
=27×
1
4
+73×
1
4

=
1
4
×(27+73),
=
1
4
×100,,
=25;

(2)[
1
2
-(
3
4
-
1
2
)]÷
1
16

=[
1
2
-
3
4
+
1
2
1
16

=[1-
3
4
1
16

=
1
4
÷
1
16

=
1
4
×16,
=4;

(3)(
3
4
-
3
8
-
1
6
)×24,
=
3
4
×24-
3
8
×24-
1
6
×24,
=18-9-4,
=5;

(4)
3
5
-
2
5
×(
4
5
-
1
20
),
=
3
5
-
2
5
×
3
4

=
3
5
-
3
10

=
3
10
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