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1/4 = 25 %
2/5 = 40 %
8/10 = 80 %
7/25 = 28 %
k mình nha bạn xinh !
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) \(\frac{1}{2}=1\div2=0,5\) \(\frac{3}{4}=3\div4=0,75\)
\(\frac{15}{8}=15\div8=1,875\) \(\frac{7}{25}=7\div25=0,28\)
\(\frac{19}{30}=19\div30=0,63\) \(\frac{21}{125}=21\div125=0,168\)
a) \(\dfrac{3}{4}=\dfrac{3\cdot25}{4\cdot25}=\dfrac{75}{100}=0,75\)
b) \(\dfrac{29}{25}=\dfrac{29\cdot4}{25\cdot4}=\dfrac{116}{100}=1,16\)
c) \(\dfrac{24}{20}=\dfrac{24:2}{20:2}=\dfrac{12}{10}=1,2\)
1/5 giờ = . `0,2`...giờ 1/4 phút = ..`0,25`....phút 2 `1/2` giờ = ..`2,5`....giờ
5/6 km=...`0,83`..km 7/10 m2=.....`0,7`..m2 8/25 lít = ..`0,32`..lít
1.1/2 ; 2/3 ; 3/4 ; 4/5 ; 5/6 .
2. 3/2 ; 13/12 ; 7/8 ; 15/22 .
3. 4/7
4. 5/4
a)
\(\dfrac{1}{2}=0,5;\dfrac{3}{4}=0,75;\dfrac{7}{5}=1,4;\dfrac{9}{8}=1,125;\dfrac{26}{25}=1,04;\dfrac{120}{125}=0,96\)
b)
\(\dfrac{15}{25}=0,6;\dfrac{75}{25}=3;\dfrac{90}{300}=0,3;\dfrac{27}{36}=0,75;\dfrac{51}{85}=0,6\)
a,1/2=5/10;3/4=75/100;7/5=140/100;26/25=108/100;120/125=960/1000
b,15/25=60/100;75/25=300/100;90/300=3/10;27/36=3/4=75/100;
51/85=3/5=60/100;39/65=3/5=60/100
1/4 = 25 %
2/5 =40 %
8/10 = 80%
7/25 = 28%