\(\frac{5}{6}+\frac{2}{19}\)=\(\frac{95}{96}+\frac{12}{96}\)=\(\frac{107}{96}\)
5/6+2/19=107/114
Đáp số : 107/114
Tích mình nha!
\(\frac{75}{100}+\frac{18}{21}+\frac{19}{23}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}=\)
\(4\frac{2}{5}+5\frac{6}{9}+2\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(\frac{2}{3\cdot5}+\frac{2}{5\cdot7}+\frac{2}{7\cdot9}+.....+\frac{2}{41\cdot43}\)
Tính bằng 2 cách:
\(\frac{17}{25}x\frac{13}{19}+\frac{17}{25}x\frac{6}{19}\)
Điển số thích hợp vào ô trống
\(\frac{5}{19}\)<\(\frac{ }{21}\)<\(\frac{6}{19}\)
Tính bằng cách thuận tiện nhất .
\(\frac{39}{16}:\frac{5}{8}-\frac{17}{16}:\frac{5}{18}+\frac{4}{5}\)
\(\frac{16}{17}x\frac{12}{19}+\frac{16}{17}x\frac{7}{19}-\frac{2}{3}\)
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)\(\frac{19}{12}-\frac{13}{12}=\)
$\frac{12}{19}\times \frac{19}{18}+\frac{11}{15}\div \frac{11}{5}=$
tính nhanh
a) \(\frac{3}{11}\)x \(\frac{7}{25}\)+ \(\frac{15}{11}\)x \(\frac{1}{5}\)
b) \(\frac{3}{7}\)x \(\frac{25}{19}\)+ \(\frac{1}{7}\)x \(\frac{18}{19}\)
c) \(\frac{6}{7}\)x \(\frac{3}{8}\)+ \(\frac{6}{7}\): \(\frac{8}{5}\)+ \(\frac{6}{7}\)
giải giúp e với e cảm ơn ạ
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
a) \(\frac{5}{11}x\frac{7}{25}+\frac{15}{11}x\frac{1}{5}\)
b) \(\frac{3}{7}x\frac{25}{19}-\frac{1}{7}x\frac{18}{19}\)
