脱式计算,能简算的要简算.(1)475+660÷33×25        (2)400-14 13 27 -85 14

脱式计算,能简算的要简算.
(1)475+660÷33×25        
(2)400-14
13
27
-85
14
27

(3) (
5
9
+
7
18
-
11
12
)×36
        
(4)5.84×1.36+1.36×3.16+1.36
(5)[1.9-6÷(2.4×5)]÷(14×0.2)
(6)[(
8
9
+
4
3
3
4
-
1
4
1
12
×
3
4
-
1
4
] ÷
1
12
jlpy3859 1年前 已收到1个回答 举报

yesterday_ML 幼苗

共回答了21个问题采纳率:85.7% 举报

(1)475+660÷33×25
=475+20×25
=475+500
=975;

(2)400-14
13
27 -85
14
27
=400-(14
13
27 +85
14
27 )
=400-100
=300;

(3) (
5
9 +
7
18 -
11
12 )×36
=
5
9 ×36+
7
18 ×36-
11
12 ×36
=20+14-33
=1;
      
(4)5.84×1.36+1.36×3.16+1.36,
=(5.84+3.16+1)×1.36,
=10×1.36,
=13.6;

(5)[1.9-6÷(2.4×5)]÷(14×0.2)
=[1.9-6÷12]÷2.8
=[1.9-0.5]÷2.8
=1.4÷2.8
=0.5;

(6)[(
8
9 +
4
3 )×
3
4 -
1
4 ]÷
1
12 ×
3
4 -
1
4 ] ÷
1
12
=[
20
9 ×
3
4 -
1
4 ]÷
1
12
=[
5
3 -
1
4 ]÷
1
12
=
17
12 ×12
=17.

1年前

2
可能相似的问题
Copyright © 2024 YULUCN.COM - 雨露学习互助 - 17 q. 0.629 s. - webmaster@yulucn.com