题目内容

脱式计算,能简算的要简算.
(
1
3
+
1
12
-
1
6
)×24
4
5
×
2
3
+
1
5
÷
3
4
2
7
×
8
9
+
5
7
×
8
9
(9.5+
3
5
)-(2.8-
2
5
)
[
1
2
-(
3
4
-
3
5
)]÷
7
10
⑥(
5
7
+
5
8
)×
2
5
(
1
3
+
1
12
-
1
6
)×24

=
1
3
×24+
1
12
×24-
1
6
×24,
=8+2-4,
=6;

4
5
×
2
3
+
1
5
÷
3
4

=
8
15
+
1
5
×
4
3

=
8
15
+
4
15

=
4
5


2
7
×
8
9
+
5
7
×
8
9

=(
2
7
+
5
7
)×
8
9

=1×
8
9

=
8
9


(9.5+
3
5
)-(2.8-
2
5
)

=(9.5+0.6)-(2.8-0.4),
=10.1-2.4,
=7.7;

[
1
2
-(
3
4
-
3
5
)]÷
7
10

=[
1
2
-(
15
20
-
12
20
)]×
10
7

=[
10
20
-
3
20
10
7

=
7
20
×
10
7

=
1
2


⑥(
5
7
+
5
8
)×
2
5

=
5
7
×
2
5
+
5
8
×
2
5

=
2
7
+
1
4

=
8
28
+
7
28

=
15
28
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