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\(\dfrac{25}{100};\dfrac{75}{1000};\dfrac{9}{100};\dfrac{2}{10}\)
\(\dfrac{1}{4}=0,25\)
\(\dfrac{3}{40}=0,075\)
\(\dfrac{72}{800}=0,09\)
\(\dfrac{6}{30}=0,2\)
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 = 25/100 = 0,25
5/2 = 25/10 = 2,5
13/8 = 1625/1000 = 1,625
250/500 = 500/1000 = 0,5
46/200 = 23/100 = 0,23
13/4 = 325/100 = 3,25
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) \(\dfrac{24}{20}=\dfrac{24:2}{20:2}=\dfrac{12}{10}=1,2\)
a) cac phan so thap phan la 7/10, 11/1000
b) 1/2=5/10
6/5=12/10
3/25= 12/100
41/200= 205/1000
Bài 1
\(\frac{15}{10}=1,5;\frac{53}{100}=0,53;\frac{147}{1000}=0,147;\frac{9}{1000}=0,009\)
Bài 2:
\(13\frac{1}{10}=13,1;5\frac{43}{100}=5,43;16\frac{429}{1000}=16,429\)
Chúc bạn học tốt!
Ta có :
\(\frac{1}{2}=1\div2=0,5\)
\(\frac{2}{3}=2\div3=0,666...\)
\(\frac{3}{4}=3\div4=0,75\)
\(\frac{4}{5}=4\div5=0,8\)
\(\frac{5}{6}=5\div6=0,8333...\)
\(\frac{6}{7}=6\div7=0,8671...\)
\(\frac{7}{8}=7\div8=0,875\)
\(\frac{8}{9}=8\div9=0,888...\)
Vậy các phân số có thể là : \(\frac{1}{2};\frac{3}{4};\frac{4}{5};\frac{7}{8}\)
3 \(\frac{4}{5}\)
1 \(\frac{1}{2}\)
2 \(\frac{3}{4}\)