\(\frac{4}{3}+\frac{4}{3}=\frac{8}{3}\)
Đơn giản quá nhì? ^_^
\(\frac{4}{3}+\frac{4}{3}=\frac{4+4}{3}=\frac{8}{3}\)
4 phần 3 + 4 phần 3 = 8 phần 3 , đơn giản
\(\frac{4}{3}+\frac{4}{3}=\frac{8}{3}\)
Đơn giản quá nhì? ^_^
\(\frac{4}{3}+\frac{4}{3}=\frac{4+4}{3}=\frac{8}{3}\)
4 phần 3 + 4 phần 3 = 8 phần 3 , đơn giản
\(\frac{1}{2}-\frac{1}{3}-\frac{2}{3}+\frac{1}{4}+\frac{2}{4}+\frac{3}{4}-\frac{1}{5}-\frac{2}{5}-\frac{3}{5}-\frac{4}{5}+...+\frac{1}{10}+\frac{2}{10}+\frac{3}{10}+...+\frac{9}{10}\)\(+\)\(\frac{9}{10}\)
Tính nhanh bài toán sau
\(\left(\frac{19}{20}x\frac{3}{4}+\frac{1}{20}x\frac{3}{4}\right)x\left(\frac{1}{2}x\frac{3}{4}-\frac{2}{4}x\frac{3}{4}\right)\)
\(\frac{75}{100}+\frac{18}{21}+\frac{19}{23}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}=\)
\(4\frac{2}{5}+5\frac{6}{9}+2\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(\frac{2}{3\cdot5}+\frac{2}{5\cdot7}+\frac{2}{7\cdot9}+.....+\frac{2}{41\cdot43}\)
Tính
\(\frac{1}{2}\times\left(\frac{3}{4}+\frac{8}{9}-\frac{1}{2}\right)=\)
\(\frac{3}{4}:\frac{4}{5}+\left(\frac{3}{4}\times2\right)\)=
ai nhanh mk k
Tính bằng cách hợp lý
\(11\frac{4}{5}-\left(17\frac{3}{4}+11\frac{4}{5}\right)+2\frac{3}{4}\)\(4\frac{11}{23}+3\frac{4}{5}-2\frac{11}{23}\)\(\frac{-27}{26}-\frac{-5}{21}+\frac{1}{26}+\frac{16}{21}+50\%\)\(-2\frac{2}{3}+\left(-0,2\right)+1.75-\frac{5}{0}+0,7\)
tính nhanh \(\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{100}}{\frac{1}{2}+\frac{2}{3}+\frac{3}{4}+....+\frac{99}{100}}\)
B1:Tính
a)\(3\frac{4}{7}x2\frac{4}{5}\)
b)\(\frac{4}{5}:\frac{1}{2}+\frac{17}{3}\)
c)\(5\frac{1}{3}-2\frac{1}{6}\)
d)\(4\frac{1}{2}:2\frac{1}{4}\)
\(\frac{7}{8}+\frac{\left(\frac{3}{4}-\frac{1}{2}\cdot\frac{2}{3}\right)}{\frac{4}{5}}\)
\(\frac{1}{2}\times\frac{2}{3}+\frac{1}{3}\times\frac{3}{4}+\frac{1}{4}\times5=?\)
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)\(\frac{8}{5}+\frac{7}{6}+\frac{5}{9}-2=?;3-\frac{5}{6}-\frac{4}{9}+\frac{32}{24}=?\)