\(0,\left(1\right)=\dfrac{1}{9}\)

\(0,\left(01\right)=\dfrac{1}{99}\)

\(1,\left(8\right)=\dfrac{187}{99}=\dfrac{187:11}{99:11}=\dfrac{17}{9}\)

\(0,\left(27\right)=\dfrac{27}{99}=\dfrac{27:9}{99:9}=\dfrac{3}{11}\)

\(0,1\left(2\right)=\frac{12-1}{90}=\frac{11}{90}\)

\(0,\left(27\right)=\frac{27}{99}=\frac{3}{11}\)

\(3,\left(42\right)=3+\frac{42}{99}=\frac{113}{33}\)

\(3,\left(45\right)=3+\frac{45}{99}=\frac{38}{11}\)

=38/11 nhé

bạn nha

Hok tốt

\(0,1\left(2\right)\)\(=\frac{12-1}{90}\)\(=\frac{11}{90}\)

\(0,\left(27\right)\)\(=\frac{27}{99}\)\(=\frac{3}{11}\)

\(3,\left(42\right)\)\(=3+\frac{42}{99}\)\(=\frac{113}{33}\)

\(3,\left(45\right)\)\(=3+\frac{45}{99}\)\(=\frac{38}{11}\)

-0,(4)=-4.0,(1)=\(\frac{-4}{9}\)

2,(23)=2+0,(23)=2+23.0,(01)=2+\(\frac{23}{99}\)=\(\frac{221}{99}\)

-4/9;221/99;238/45;-304/75

Bài 1: 0,27 ; 0,013 ; 0,00261.

Bài 2 : 121/100; 7/100; 2013/1000

0,27,-0,0013,0,00261

121/100 , 7/100

-2013/1000

Bài 1:

27/100 = 0,27

-13/1000 = - 0,013

261/100000 = 0,00261

Bài 2:

1,21 = 121/100

0,07 = 7/100

- 2,013 = - 2013/1000

Nhớ k mình nha

a: \(-1,\left(3\right)=-\dfrac{4}{3}\)

b: \(0,\left(72\right)=\dfrac{8}{11}\)

\(-0.025=\dfrac{-25}{1000}=\dfrac{-1}{40}\)

\(-0.033=\dfrac{-33}{1000}\)

-0,025= \(\dfrac{-1}{40}\)

-0,033= \(\dfrac{-33}{1000}\)

-0,025 = \(\dfrac{-25}{1000}\)=\(\dfrac{-1}{40}\)

-0,033 = \(\dfrac{-33}{1000}\)

-0,225=-9/40

-0,033=-33/1000