=0,3

\(\dfrac{5}{6}=0,8\)

5/6=5:6=0,83333....

5/6 em nè

5:6=5/6

45:60=3\4 h=0,75

12:60=1\5=0,2 h

45 phút = 3/4 giờ

12 phút = 1/5 giờ

còn 2 phép cuối hk ai giải được à?

\(0,23=\dfrac{23}{100}\\ 12,34=\dfrac{1234}{100}\\ 450,102=\dfrac{450102}{1000}\\ 1,024=\dfrac{1024}{1000}\)

\(\dfrac{7}{5}=1,4\\ \dfrac{34}{20}=1,7\\ \dfrac{25}{50}=0,5\\ \dfrac{6}{25}=0,24\\ \dfrac{24}{125}=0,192\)

`7/5 =7:5=1,4`

`34/20 = 34:20=1,7`

`25/50=25:50=0,5`

`6/25=6:25=0,24`

`24/125=0,192`

\(\dfrac{7}{5}\)=1,4;\(\dfrac{34}{20}\)=1,7;\(\dfrac{25}{50}\)=0,5;\(\dfrac{6}{25}\)=0,24;\(\dfrac{24}{125}\)=0,192.

\(\frac{2}{5}\)\(=\frac{4}{10}\)\(=0,4\)

_HT_

\(2\over 5 \)= \(0,4\)

27/4=6,75

6,75

\(\frac{5}{4}=\frac{125}{100}=1,25\)

\(\frac{30}{25}=\frac{120}{100}=1,20\)

\(\frac{9}{8}=\frac{1125}{1000}=1,125\)

\(\frac{101}{125}=\frac{808}{1000}=0,808\)

\(\frac{403}{250}=\frac{3224}{1000}=3,224\)

1,25 = 125/100

1,2 = 120/100

1,125 = 1125/1000

0,808 = 808/1000

1,612 = 1612/1000

Ta có : \(\frac{5}{4}=\frac{125}{100}=1,25\)

           \(\frac{30}{25}=\frac{120}{100}=1,2\)

            \(\frac{9}{8}=\frac{1125}{1000}=1,125\)

             \(\frac{101}{125}=\frac{808}{1000}=0,808\)

              \(\frac{403}{250}=\frac{1612}{1000}=1,612\)