\(0,32=\dfrac{32}{100}=\dfrac{8}{25}\\ -0,124=\dfrac{-124}{1000}=\dfrac{-31}{250}\\ 1,28=\dfrac{128}{100}=\dfrac{32}{25}\\ -3,12=\dfrac{-312}{100}=\dfrac{-78}{25}\)

\(0,32=\dfrac{8}{25}\)

\(-0,124=\dfrac{-31}{250}\)

\(1,28=\dfrac{32}{25}\)

\(-3,12=\dfrac{-78}{25}\)

Chúc bn học tốt!!

a) 0,32 = 8/25.

b) -0,124 = -31/250.

c) 1,28 = 32/25.

d) -3,12 = -78/25.

\(0,32=\frac{32}{100}=\frac{8}{25}\)

\(-0,124=\frac{-124}{1000}=\frac{-31}{250}\)

\(1,28=\frac{128}{100}=\frac{32}{25}\)

\(-3,12=\frac{-312}{100}=\frac{-78}{25}\)

2 a 8,5:3=2,8(3) b.18,7:6=3,11(6) c.58:11=5,(27) d.14,2:3,33=4,(264)

3a.0,32=8/25 b.-0,124=-31/250 c1,28=32/25 d,-3,12=-78/25

4

1/99=0.(01) 1/999=0,(001)

đúng thì tích nha

a)

b)

c)

d)

a)

b)

c)

d)

a) 0 , 32=8/25

b) -0,124=-31/250

c) 1,28=32/25

d) -3,12=-78/25

a) \(0,32=\frac{32}{100}=\frac{8}{25}\)

b) \(-0,124=-\frac{124}{1000}=-\frac{31}{250}\)

c) \(1,28=\frac{128}{100}=\frac{32}{25}\)

d) \(-3,12=-\frac{312}{100}=-\frac{78}{25}\)

a) 0,32 = \(\frac{32}{100}=\frac{2^5}{10^2}=\frac{2^5}{\left(2.5\right)^2}=\frac{2^3}{5^2}=\frac{8}{25}\)

b) -0,124 = \(\frac{124}{1000}=\frac{-31.4}{10^3}=\frac{-31.2^2}{2^3.5^3}=\frac{-31}{2.5^3}=\frac{-31}{250}\)

c) 1,28 = \(\frac{32}{25}\)

d) -3,12 = \(\frac{-78}{25}\)

ok mk nhé!! 4354655756768679235255435464566757687698989783635456546575675675676876876

a) \(0,32=\) \(\frac{32}{10}=\frac{16}{5}\)

b) \(-0,124=-\frac{124}{1000}=-\frac{31}{250}\)

c) \(1,28=\frac{128}{100}=\frac{32}{25}\)

d) \(-3,12=-\frac{312}{100}=-\frac{78}{25}\)

nha bn 

\(0,32=\frac{8}{25}\)

\(-0,124=-\frac{31}{250}\)

\(1,28=\frac{32}{25}\)

\(-3,12=-\frac{78}{25}\)

\(0,32=\frac{32}{100}=\frac{4.8}{4.25}=\frac{8}{25}\)

\(-0,124=\frac{-124}{1000}=\frac{-4.31}{4.25}=\frac{-31}{250}\)

\(1,28=\frac{128}{100}=\frac{4.32}{4.25}=\frac{32}{25}\)

\(-3,12=\frac{-312}{100}=\frac{-4.78}{4.25}=\frac{-78}{25}\)