1/2:0,5 - 1/4 ; 0,25 + 1/8 : 0,125 - 1/10 ; 0,1

= 0,5 : 0,5 - 0,25 : 0,25 + 0,125 : 0,125 - 0,1 : 0,1

= 1 - 1 + 1 - 1

= 0 + 1 - 1

= 1 - 1

= 0

Lời giải:
$=\frac{1}{2}\times 2-\frac{1}{4}\times 4+\frac{1}{8}\times 8-\frac{1}{10}\times 10$

$=1-1+1-1=0$

nhanh giúp mk ạ

\(13,25:0,75+13,25:0,25+13,5:0,325\)

\(=13,25:\left(0,75+0,25+0,325\right)\)

\(=13,25:1,325\)

\(=10\)

\(\dfrac{1}{4}:0,25-\dfrac{1}{8}:0,125+\dfrac{1}{2}:0,5-\dfrac{1}{16}:0,0625\)

\(=\dfrac{1}{4}:\dfrac{1}{4}-\dfrac{1}{8}:\dfrac{1}{8}+\dfrac{1}{2}:\dfrac{1}{2}-\dfrac{1}{16}:\dfrac{1}{16}\)

\(=1-1+1-1\)

\(=0\)

\(a,13,25:0,75+13,75:0,25+13,75:0,325\\ =13,25:\left(0,75+0,25+0,325\right)\\ =13,25:1,325\\ =10\\ b,\dfrac{1}{4}:0,25-\dfrac{1}{8}:0,125+\dfrac{1}{2}:0,5-\dfrac{1}{16}:0,0625\\ =\dfrac{1}{4}:\dfrac{1}{4}-\dfrac{1}{8}:\dfrac{1}{8}+\dfrac{1}{2}:\dfrac{1}{2}-\dfrac{1}{16}:\dfrac{1}{16}\\ =1-1+1-1\\ =0\)

\(\dfrac{1}{4}\) : 0,25 - \(\dfrac{1}{8}\) : 0,125 + \(\dfrac{1}{2}\) : 0,5 - 1

= 0,25 x 4 - 0,125 x 8 + 0,5 x 2 - 1

= 1 - 1 + 1 - 1

= 0 + 1 - 1

= 1 - 1

= 0

A = \(\dfrac{1}{4}\) : 0,25 - \(\dfrac{1}{8}\): 0,125 + \(\dfrac{1}{2}\): 0,5 - 1

A = \(\dfrac{1}{4}\) x 4 - \(\dfrac{1}{8}\) x 8 + \(\dfrac{1}{2}\) x 2 - 1

A = 1 - 1 + 1  - 1

A =  (1 - 1) + (1 - 1)

A = 0 

\(\frac{1}{4}\) :  0,25 - \(\frac{1}{8}\) : 0,125 - \(\frac{1}{2}\) : 0,5 - \(\frac{1}{16}\) : 0,0625

= \(\frac{1}{4}\) x 4 - \(\frac{1}{8}\) x 8 - \(\frac{1}{2}\) x 2 - \(\frac{1}{16}\) x 16 

= 1 - 1 - 1 - 1

=  -2

Nối:

0,25 ×× 1,4

 4

0,25 ×× 1,6

 0,4

2,5 ×× 1,4
 

=1/4:1/4-1/8:1/8+1/2:1/2-1/16:1/16

=1-1+1-1

=0

1/2 : 0,5 + 1/4:0.25 + 1/8 : 0,125=1/2x2 + 1/4x4 + 1/8x8=1+1+1=3

tk mik nha!!chúc bạn học giỏi

3 bạn nhé

\(\frac{1}{2}:0,5+\frac{1}{4}:0,25+\frac{1}{8}:0,125\)

\(\left(\frac{1}{2}\cdot2\right)+\left(\frac{1}{4}\cdot4\right)+\left(\frac{1}{8}\cdot8\right)\)

\(\frac{2}{2}+\frac{4}{4}+\frac{8}{8}=1+1+1=3\)

là tính nhanh

bằng 0

= 1 - 1 + 1 - 1

= 0 + 0

= 0

học tốt

\(\frac{1}{4}:0,25-\frac{1}{8}:0,125+\frac{1}{2};0,5-\frac{1}{16}:0,0625\)

\(=1-1+1-1\)

\(=0+0\)

\(=0\)

học tốt

Bài của bạn Nguyễn Ngọc Linh thiếu một bước

1/4:1/4-1/8:1/8+1/2:1/2-1/16:1/16

=1-1+1-1 

=0

= (30 x 2) + (20 x 5) + (25 x 4)

= 60 + 100 + 100

= 260

(30 : 0,5) + (20 : 0,2) + (25 : 0,25)

= (30 x 2) + (20 x 5) + (25 x 4)

= 60 + 100 + 100

= 260

`(30:0,5)+(20:0,2)+(25:0,25)`

`=(30xx2)+(20xx5)+(25xx4)`

`= 60  + 100 + 100`

`= 160 + 100`

`= 260`