\(=\frac{15}{16}.\frac{24}{25}=\frac{9}{10}\)
\(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}\cdot\frac{24}{25}=\frac{15\cdot24}{16\cdot25}=\frac{9}{10}\)
\(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}.\frac{24}{25}=\frac{9}{10}\)
\(=\frac{15}{16}.\frac{24}{25}=\frac{9}{10}\)
\(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}\cdot\frac{24}{25}=\frac{15\cdot24}{16\cdot25}=\frac{9}{10}\)
\(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}.\frac{24}{25}=\frac{9}{10}\)
bài 1 : tính phân số:
a) \(\frac{5}{7}+\frac{4}{9}=?;\frac{4}{5}-\frac{2}{3}=?;\frac{9}{11}+\frac{3}{8}=?;\frac{16}{25}-\frac{2}{5}=?\)=?
b)\(5+\frac{3}{5}=?;10-\frac{9}{16}=?;\frac{2}{3}-\left(\frac{1}{6}+\frac{1}{8}\right)=?\)
c)\(\frac{5}{7}+\frac{7}{6}=?;\frac{7}{12}+\frac{17}{18}=?;\frac{9}{8}+\frac{15}{32}=?;4+\frac{35}{45}=?\)
d)\(\frac{11}{4}-\frac{15}{16}=?;\frac{5}{6}-\frac{5}{8}=?;\frac{196}{64}-2=?;3-\frac{13}{9}=?\)
e)\(\frac{8}{5}+\frac{7}{6}+\frac{5}{9}-2=?;3-\frac{5}{6}-\frac{4}{9}+\frac{32}{24}=?\)
Tính bằng cách thuận tiện nhất
\(\frac{3}{4}\)\(\times\)\(\frac{8}{9}\)\(\times\)\(\frac{15}{16}\)\(\times\)\(\frac{24}{25}\)\(\times\)\(\frac{35}{36}\)
\(\frac{15}{24}\)va \(\frac{18}{16}\)
Rút gọn phân số : \(\frac{10}{16};\frac{8}{24};\frac{15}{90};\frac{9}{3}\)
\(\frac{14}{16}\)va \(\frac{24}{21}\)
lam bang hai cach va so sanh
so sanh hai phân so
\(\frac{35}{25}\) va \(\frac{16}{24}\)
1 . rút gọn rồi tính
a)\(\frac{16}{24}-\frac{1}{3}=\)
b)\(\frac{4}{5}-\frac{12}{60}=\)
3 . tính rồi rút gọn
a)\(\frac{17}{6}-\frac{2}{6}=\)
b)\(\frac{16}{15}-\frac{11}{15}\)
c)\(\frac{19}{12}-\frac{13}{12}=\)
đề bài:quy đồng mẫu số
a)
\(\frac{14}{15};\frac{47}{45}va\frac{5}{4}?\)
b)
\(\frac{7}{12};\frac{11}{18}va\frac{25}{24}?\)
bài 3:quy đồng mẫu số
a)
\(\frac{14}{15};\frac{47}{45}và\frac{5}{4}?\)
b)
\(\frac{7}{12};\frac{11}{18}và\frac{25}{24}?\)
đề bài ;quy đồng mẫu số
a)
\(\frac{14}{15};\frac{47}{45}va\frac{5}{4}?\)
b)
\(\frac{7}{12};\frac{11}{18}va\frac{25}{24}?\)