\(\frac{3}{\frac{9}{11}}>\frac{\frac{3}{9}}{11}>\frac{3}{9+11}>\frac{3}{9\times11}\).
\(\frac{3}{\frac{9}{11}}>\frac{\frac{3}{9}}{11}>\frac{3}{9+11}>\frac{3}{9\times11}\).
\(\frac{-5}{9}.\frac{3}{11}-\frac{5}{9}.\frac{10}{11}+\frac{5}{9}.\frac{10}{11}+\frac{5}{9}.\frac{2}{11}\)
Đáp số: A = | |
A = 11 \(\frac{2}{1\times3}\)+11\(\frac{2}{3\times5}\)+ 11 \(\frac{2}{5\times7}\)+ 11\(\frac{2}{7\times9}\)+ 11\(\frac{2}{9\times11}\)
giúp mk với nhanh nhé
đề bài : Tính nhanh tổng A
Phân số nào lớn nhất trong các phân số sau : \(\frac{7}{9},\frac{3}{5},\frac{11}{13},\frac{99}{101},\frac{9}{11}\)
Tinh nhanh
\(\frac{2}{3\times5}\)+ \(\frac{2}{5\times7}\)+ \(\frac{2}{7\times9}\)+ \(\frac{2}{9\times11}\)+ \(\frac{2}{11\times13}\)
\(\left(19\frac{3}{8}-5\frac{1}{9}\right)-\left(11\frac{3}{8}-3\frac{1}{9}\right)=\)
Tính nhanh:
A=\(\left(\frac{2}{5}+\frac{2}{9}+\frac{2}{11}\div\frac{7}{5}+\frac{7}{9}+\frac{7}{11}\right)\div\left(\frac{1}{3}-\frac{1}{4}+\frac{1}{5}\div\frac{7}{6}-\frac{7}{8}+\frac{7}{10}\right)\)
\(\frac{4}{3}\cdot\frac{9}{8}\cdot......\cdot\frac{100}{99}-\frac{9}{11}\)* = dấu nhân
Tính: B = \(\frac{4}{3}\times\frac{9}{8}\times...\times\frac{100}{99}-\frac{9}{11}\)