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\(\frac{2}{5}=\frac{4}{10}\)\(\frac{5}{2}=\frac{25}{10}\) \(\frac{16}{25}=\frac{64}{100}\) \(\frac{132}{125}=\frac{1052}{1000}\)
a) \(\frac{15}{10}=1,5\) \(\frac{675}{10}=6,75\) \(\frac{7}{10}=0,7\)
\(\frac{79}{100}=0,79\) \(\frac{5}{100}=0,05\) \(\frac{67}{100}=0,67\)
b) \(\frac{1}{2}=1\div2=0,5\) \(\frac{3}{4}=3\div4=0,75\)
\(\frac{15}{8}=15\div8=1,875\) \(\frac{7}{25}=7\div25=0,28\)
\(\frac{19}{30}=19\div30=0,63\) \(\frac{21}{125}=21\div125=0,168\)
\(\frac{7}{20}\)= 0,35
\(\frac{9}{25}\)= 0,45
\(\frac{15}{125}\)= 0,12
\(\frac{98}{100}\)= 0,98
\(\frac{15}{150}\)= 0,1
Hk tốt
\(\dfrac{7}{5}=1,4\\ \dfrac{34}{20}=1,7\\ \dfrac{25}{50}=0,5\\ \dfrac{6}{25}=0,24\\ \dfrac{24}{125}=0,192\)
\(\frac{3}{20}=\frac{15}{100}\)
\(\frac{50}{500}=\frac{1}{10}\)
\(\frac{4}{25}=\frac{16}{100}\)
\(\frac{6}{125}=\frac{48}{1000}\)
4 phần 5=...80/100...=..0,8...
123 phần 125=.984/1000.....=..0,984.....
13 phần 25=...52/100..=..0,52......
9 phần 75=..3/25....=...12/100....=...0,12.......
\(\frac{4}{5}=\frac{8}{10}=0,8\)
\(\frac{123}{125}=\frac{984}{1000}=0,984\)
\(\frac{13}{25}=\frac{52}{100}=0,52\)
\(\frac{9}{75}=\frac{3}{25}=\frac{12}{100}=0,12\)
@Duongg
\(\dfrac{25}{4}=\dfrac{25\times25}{4\times25}=\dfrac{625}{100}\)
\(\dfrac{23}{125}=\dfrac{23\times8}{125\times8}=\dfrac{184}{1000}\)
\(\dfrac{15}{5}=3=\dfrac{3\times10}{10}=\dfrac{30}{10}\)
\(\dfrac{14}{20}=\dfrac{14\times5}{20\times5}=\dfrac{70}{100}\)
\(\dfrac{17}{50}=\dfrac{17\times2}{50\times2}=\dfrac{34}{100}\)
\(\dfrac{43}{40}=\dfrac{43\times25}{40\times25}=\dfrac{1075}{1000}\)
\(\dfrac{45}{8}=\dfrac{45\times125}{8\times125}=\dfrac{5625}{1000}\)
\(\dfrac{25}{4}=\dfrac{25\times25}{4\times25}=\dfrac{625}{100}\)
\(\dfrac{23}{125}=\dfrac{23\times8}{125\times8}=\dfrac{184}{1000}\)
\(\dfrac{15}{5}=\dfrac{15\times2}{5\times2}=\dfrac{30}{10}\)
\(\dfrac{14}{20}=\dfrac{14\div2}{20\div2}=\dfrac{7}{10}\)
\(\dfrac{17}{50}=\dfrac{17\times2}{50\times2}=\dfrac{34}{100}\)
\(\dfrac{43\times25}{40\times25}=\dfrac{1075}{1000}\)
\(\dfrac{45}{8}=\dfrac{45\times125}{8\times125}=\dfrac{5625}{1000}\)