脱式计算,能简算的要简算.① ( 1 3 + 1 12 - 1 6 )×24 ② 4 5 × 2 3 + 1 5 ÷ 3

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
宿命逍遥 1年前 已收到1个回答 举报

bing_271 幼苗

共回答了13个问题采纳率:84.6% 举报

① (
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 ;

④ (9.5+
3
5 )-(2.8-
2
5 )
=(9.5+0.6)-(2.8-0.4),
=10.1-2.4,
=7.7;

⑤ [
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 .

1年前

2
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