\(\frac{9}{36}=\frac{12}{48}\)
Ta có:
\(\frac{9}{36}=\frac{1}{4}\)
và \(\frac{12}{48}=\frac{1}{4}\)\
nên \(\frac{9}{36}=\frac{12}{48}\)
tính bằng cách thuận tiện nhất
a,\(\frac{6}{7}\cdot\frac{16}{15}\cdot\frac{7}{6}\cdot\frac{21}{32}\)b, \(\frac{21}{17}\cdot\frac{13}{14}\cdot56\cdot\frac{3}{42}\) c,\(\frac{7}{4}\cdot\frac{11}{21}+\frac{11}{21}\cdot\frac{5}{4}\) d,\(\frac{23}{14}\cdot\frac{6}{14}-\frac{9}{14}\cdot\frac{6}{13}\)
\(\frac{1}{2}\cdot\frac{2}{3}\cdot\frac{3}{4}\cdot\frac{4}{5}\cdot...\cdot\frac{99}{100}\)
\(\frac{1}{2}\cdot\frac{2}{3}\cdot\frac{3}{4}\cdot...\cdot\frac{2001}{2002}\cdot\frac{2002}{2003}\)=?
Tính bằng 2 cách
a. \(\frac{5}{24}\cdot\frac{5}{12}\cdot24\)
b. \(\frac{3}{7}\cdot\frac{16}{33}+\frac{16}{33}\cdot\frac{4}{7}\)
Ai nhanh ai đúng em click nèeee
Giúp em điiiii
Tính nhanh:\(\frac{2}{3}\cdot\frac{3}{4}\cdot\frac{4}{5}\cdot\frac{5}{6}:\frac{2}{6}+2019\)
\(\frac{8}{5}\cdot\frac{4}{6}+\frac{24}{5}\cdot\frac{7}{6}+\frac{4}{5}\cdot\frac{11}{6}\cdot2\)
Tính nhanh \(\left(1-\frac{1}{2}\right)\cdot\left(1-\frac{1}{3}\right)\cdot\left(1-\frac{1}{4}\right)\cdot\left(1-\frac{1}{5}\right)\)
\(\frac{9}{20}\cdot\frac{5}{12}=........................=..........\)
tính bằng cách thuận tiện\(\dfrac{5}{9}\cdot\dfrac{1}{4}+\dfrac{4}{9}\cdot\dfrac{3}{12}\)
