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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.\(\frac{17}{20}+\frac{13}{15}+\frac{41}{15}=\frac{17}{20}+\left(\frac{13}{15}+\frac{41}{15}\right)=\frac{17}{20}+\frac{18}{5}=\frac{17}{20}+\frac{72}{20}=\frac{89}{20}\)
b. \(\frac{11}{22}+\frac{22}{66}+\frac{33}{132}=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}=\frac{6}{12}+\frac{4}{12}+\frac{3}{12}=\frac{15}{12}=\frac{5}{4}\)
c. \(\frac{4}{5}-\frac{3}{8}+\frac{1}{2}=\frac{4}{5}-\frac{1}{8}=\frac{32-5}{40}=\frac{27}{40}\)
d. \(5-\frac{2}{3}+\frac{3}{4}=\frac{70-8-9}{12}=\frac{53}{12}\)
a] 41/100
b] 13/5 = 2,675/500 = 0,154/25 = 0,1662/125 = 0,496
6/5=1,2 3/8=0,375 9/125=0,072
7/2=3,5 19/25=0,76 24/16=1,5
15/4=3,75 30/50=0,5 9/24=0,375
li-ke cho mình nha
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
`1/4 = 25/100 = 0,25`
`2/5 = 4/10 = 0,4`
`15/8 = 1875/1000 = 1,875`
`13/50 = 26/100 = 0,26`
`4/125 =32/1000 = 0,032`
`6/250 = 24/1000 = 0,024`
`12/25 = 48/100 = 0,48`
\(\dfrac{1}{4}=0,25\) \(;\dfrac{2}{5}=0,4\)
\(\dfrac{15}{8}=1,875;\dfrac{13}{50}=0,26;\dfrac{4}{125}=0,032;\)\(\dfrac{6}{250}=0,024;\dfrac{12}{25}=0,48\)