脱式计算.15 7 29 -(5 3 8 +3 22 29 )-4 5 8 1 1 4 ×43×70%-2÷ 4 5 【

脱式计算.
15
7
29
-(5
3
8
+3
22
29
)-4
5
8
1
1
4
×43×70%-2÷
4
5

【2.1+7÷(3
1
12
-1
5
8
)】×1
2
3
3
7
×5÷
3
7
×5)×(1.685÷1
1
4
-0.235×
4
5

1-【4
1
3
-(31%-
1
10
)×16
2
3
】÷1
1
5
15
3
4
÷63%-【24
2
3
-8
2
3
×(3
7
8
-287.5%)】
不看锄禾日当午 1年前 已收到1个回答 举报

cc8327698 幼苗

共回答了17个问题采纳率:94.1% 举报

(1)15
7
29 -(5
3
8 +3
22
29 )-4
5
8
=15
7
29 -5
3
8 -3
22
29 -4
5
8 ,
=15
7
29 -3
22
29 -(5
3
8 +4
5
8 ),
=11
14
29 -10,
=1
14
29 ;

(2)1
1
4 ×43×70%-2÷
4
5
=53.75×70%-2÷
4
5 ,
=37.625-2.5,
=35.125;

(3)[2.1+7÷(3
1
12 -1
5
8 )]×1
2
3
=[2.1+7÷
35
24 ]×1
2
3 ,
=[2.1+4.8]×1
2
3 ,
=6.9×1
2
3 ,
=11.5;

(4)(
3
7 ×5÷
3
7 ×5)×(1.685÷1
1
4 -0.235×
4
5 )
=(
15
7 ÷
3
7 ×5)×(1.348-0.188),
=25×1.16,
=29;

(5)1-[4
1
3 -(31%-
1
10 )×16
2
3 ]÷1
1
5
=1-[4
1
3 -0.21×16
2
3 ]÷1
1
5 ,
=1-[4
1
3 -3
1
2 ]÷1
1
5 ,
=1-
5
6 ÷1
1
5 ,
=1-
25
36 ,
=
11
36 ;

(6)15
3
4 ÷63%-[24
2
3 -8
2
3 ×(3
7
8 -287.5%)]
=15
3
4 ÷63%-[24
2
3 -8
2
3 ×1],
=15
3
4 ÷63%-16,
=25-16,
=9.

1年前

3
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