Chị ơi,chị thử dùng phân số trung gian chưa ?
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So sanh
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a, \(\frac{19}{18}va\frac{2011}{2010}\)
b, \(\frac{72}{73}va\frac{98}{99}\)
c, \(\frac{7}{9}va\frac{19}{17}\)
1:so sánh
\(\frac{72}{73}\)và \(\frac{98}{99}\) ; \(\frac{7}{9}\)và \(\frac{19}{17}\) ; \(\frac{18}{31}\)và \(\frac{15}{37}\) ; \(\frac{72}{73}\)và \(\frac{58}{99}\)
So sánh hai phân số: frac{-7}{31}vafrac{6}{31};frac{-97}{128}vafrac{-99}{128} ;frac{3}{7}vafrac{-6}{7};frac{2}{5}vafrac{4}{5}frac{-2}{5}vafrac{13}{5}frac{4}{9}vafrac{7}{9}frac{5}{12}vafrac{7}{12}frac{-7}{15}vafrac{-8}{15}frac{-2}{5}vafrac{4}{5}frac{4}{7}vafrac{3}{7}frac{-11}{13}vafrac{-15}{13}frac{-2}{7}vafrac{-4}{14}frac{_{-5}}{7}vafrac{-10}{7}frac{-13}{5}vafrac{1}{5}frac{-6}{7}vafrac{-3}{7}frac{3}{7}vafrac{5}{7}frac{-7}{9}vafrac{-5}{9}frac{-3}{7}vafrac{-5}{7}frac{-13}{9}vafrac{1}{9} so sánh số...
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So sánh hai phân số: \(\frac{-7}{31}va\frac{6}{31}\);\(\frac{-97}{128}va\frac{-99}{128}\) ;\(\frac{3}{7}va\frac{-6}{7}\);\(\frac{2}{5}va\frac{4}{5}\)\(\frac{-2}{5}va\frac{13}{5}\)\(\frac{4}{9}va\frac{7}{9}\)\(\frac{5}{12}va\frac{7}{12}\)\(\frac{-7}{15}va\frac{-8}{15}\)\(\frac{-2}{5}va\frac{4}{5}\)\(\frac{4}{7}va\frac{3}{7}\)\(\frac{-11}{13}va\frac{-15}{13}\)\(\frac{-2}{7}va\frac{-4}{14}\)\(\frac{_{-5}}{7}va\frac{-10}{7}\)\(\frac{-13}{5}va\frac{1}{5}\)\(\frac{-6}{7}va\frac{-3}{7}\)\(\frac{3}{7}va\frac{5}{7}\)\(\frac{-7}{9}va\frac{-5}{9}\)\(\frac{-3}{7}va\frac{-5}{7}\)\(\frac{-13}{9}va\frac{1}{9}\) so sánh số cùng mẫu số \(\frac{-7}{13};\frac{-4}{13}\) \(\frac{1}{7};\frac{-4}{-7}\)
So sánh các phân số sau
c)\(\frac{11}{15}\)và\(\frac{13}{17}\)
d)\(\frac{18}{53}\)và\(\frac{26}{78}\)
e)\(\frac{72}{73}\)và\(\frac{98}{99}\)
so sanh
a )
\(\frac{179}{197}va\frac{971}{917}\)
b )
\(\frac{64}{85}va\frac{73}{81}\)
c )
\(\frac{456}{461}va\frac{123}{128}\)
d )
\(\frac{53}{57}va\frac{531}{571}\)
e )
\(\frac{58}{89}va\frac{36}{53}\)
g )
\(\frac{11}{32}va\frac{16}{49}\)
So sánh:
\(\frac{72}{73}\)và \(\frac{58}{99}\)
So sánh 2 phân số ai làm đúng trả lời đầu tiên mik like nha ^^ \(\frac{72}{73}va\frac{98}{99}\); \(\frac{1256}{1257}va\frac{18}{17}\); \(\frac{4.9-4.6}{8.5+4.2}\)
so sánh các phân số:
a)\(\frac{2}{3}và\frac{1}{4}\)
b)\(\frac{7}{10}va\frac{7}{8}\)
c)\(\frac{6}{7}va\frac{3}{5}\)
d)\(\frac{14}{21}va\frac{60}{72}\)
e)\(\frac{16}{9}va\frac{24}{13}\)
g)\(\frac{27}{82}va\frac{26}{75}\)
SO SANH
A=\(\frac{3}{4}+\frac{8}{9}+............+\frac{999}{1000}\)voi 98 va 99