So sánh :
a)\(\frac{3}{124},\frac{1}{41},\frac{5}{207},\frac{2}{83}\)
b)\(\frac{-2525}{2929}và\frac{-217}{245}\)
c)\(A=\frac{3^{10}+1}{3^9+1}vàB=\frac{3^9+1}{3^8+1}\)
d)\(\frac{27}{82}và\frac{26}{75}\)
Bài 1: So sánh các ps sau:
a)\(\frac{1}{2};\frac{1}{3};\frac{2}{3}\)
b)\(\frac{4}{9};-\frac{1}{2};\frac{3}{7}\)
c)\(\frac{3}{124};\frac{1}{41};\frac{5}{207};\frac{2}{83}\)
d)\(\frac{134}{43};\frac{55}{21};\frac{74}{19};\frac{116}{37}\)
e)\(\frac{16}{9};\frac{24}{13}\)
g)\(\frac{-2525}{2929};\frac{-217}{245}\)
h)\(\frac{27}{82};\frac{26}{75}\)
i)\(\frac{-49}{75};\frac{64}{-95}\)
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 sánh: \(\frac{3}{124},\frac{1}{41},\frac{2}{83},\frac{5}{207}\)
So sánh các phân số:
a)\(\frac{3}{124},\frac{1}{41},\frac{5}{207},\frac{2}{83}\)
b)\(\frac{134}{43},\frac{55}{21},\frac{74}{19},\frac{116}{37}\)
c)\(\frac{-2525}{2929},,\frac{-217}{245}\)
d)\(\frac{27}{28},\frac{26}{75}\)
e)\(\frac{-49}{78}.\frac{64}{-95}\)
So sánh:
\(\frac{3}{124},\frac{1}{41},\frac{2}{83},\frac{5}{207}\)
\(\frac{-2525}{2929}v\text{à}\frac{-217}{245}\)
so sánh
\(\frac{1}{2},\frac{1}{3},\frac{2}{3}\) \(\frac{4}{9},-\frac{1}{2},\frac{3}{7}\)
\(\frac{3}{124},\frac{1}{41},\frac{5}{207},\frac{2}{83}\) \(\frac{134}{43},\frac{55}{21},\frac{74}{19},\frac{116}{37}\)
\(\frac{16}{9},\frac{24}{13}\) \(\frac{-2525}{2929},\frac{-217}{245}\)
\(\frac{27}{82},\frac{26}{75}\) \(\frac{-49}{78},\frac{64}{-95}\)
Bài 1:Tìm x
a, \(\frac{x-12}{4}=\frac{1}{2}\)
Bài 2:Rút gọn PS
a, \(\frac{-315}{540}\) b, \(\frac{25.13}{26.35}\) c,\(\frac{6.9-2.17}{63.3-119}\) d, \(\frac{1989.1990+3978}{1992.1991-3984}\)
Bài 3:So sánh PS
a, \(\frac{2}{3}\)và\(\frac{1}{4}\) b, \(\frac{7}{10}\)và \(\frac{7}{8}\) c,\(\frac{6}{7}\)và \(\frac{3}{5}\) d,\(\frac{14}{21}\)và\(\frac{60}{72}\) e,\(\frac{16}{9}\)và\(\frac{24}{13}\) f,\(\frac{27}{82}\)và\(\frac{26}{75}\)
So sánh các phân số sau :
a) \(\frac{1}{2};\frac{1}{3};\frac{2}{3}\) e) \(\frac{4}{9};-\frac{1}{2};\frac{3}{7}\)
b) \(\frac{3}{124};\frac{1}{41};\frac{5}{207};\frac{2}{83}\) f) \(\frac{134}{43};\frac{55}{21};\frac{74}{19};\frac{116}{37}\)
c)\(\frac{16}{9}\)và \(\frac{24}{13}\) g) \(\frac{-2525}{2929}\)và \(\frac{-217}{245}\)
d) \(\frac{27}{82}\)và \(\frac{26}{75}\) h) \(\frac{-49}{78}\)và \(\frac{64}{-95}\)
