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
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