Bài 1: 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 = \(\frac{-312}{100}=\frac{-78}{25}\)
Bài 2: \(\frac{1}{99}=0,\left(01\right)\)
\(\frac{1}{999}=0,\left(001\right)\)
1)a)0,32=\(\frac{8}{25}\) c)1,28=\(\frac{32}{25}\)
b)-0,124=\(\frac{-31}{250}\) d)-3,12=\(\frac{-78}{25}\)
2)\(\frac{1}{99}=0,\left(01\right)\)
\(\frac{1}{999}=0,\left(001\right)\)
\(1,\)
\(a.\)
\(0,32=\frac{32}{100}=\frac{8}{25}\)
\(b.\)
\(-0,124=\frac{-124}{1000}=-\frac{31}{250}\)
\(c.\)
\(1,28=\frac{128}{100}=\frac{32}{25}\)
\(d.\)
\(-3,12=-\frac{312}{100}=\frac{78}{25}\)
\(2,\)
\(\frac{1}{99}=0,\left(01\right)\)
\(\frac{1}{999}=1,\left(001\right)\)