\(4.\frac{2}{7}=\frac{4}{1}.\frac{2}{7}=\frac{8}{7}\)
\(4\times\frac{2}{7}\)
\(=\frac{8}{7}\)
tíc mình
nha
\(4.\frac{2}{7}=\frac{8}{7}\)
k mình nha !!!
\(4.\frac{2}{7}=\frac{4}{1}.\frac{2}{7}=\frac{8}{7}\)
\(4\times\frac{2}{7}\)
\(=\frac{8}{7}\)
tíc mình
nha
\(4.\frac{2}{7}=\frac{8}{7}\)
k mình nha !!!
Dãy phân số nào được viết theo thứ tự từ bé đến lớn là :
A. \(\frac{1}{2},\frac{2}{5},\frac{2}{7}\) B. \(\frac{2}{7},\frac{2}{5},\frac{1}{2}\) C. \(\frac{2}{5},\frac{2}{7},\frac{2}{5}\) C. \(\frac{1}{2},\frac{2}{7},\frac{1}{7}\)
Bài 1: Tính (theo mẫu)
Mẫu : \(\frac{9}{10}x\frac{5}{6}=\frac{3x3x5}{5x2x3x2}\)
\(\frac{4}{3}x\frac{9}{10}\) \(\frac{9}{16}:\frac{27}{8}\) \(\frac{40}{7}:\frac{5}{14}\)
Bài 2 : Tính
\(\frac{9}{2}x\frac{4}{5}\) \(\frac{8}{7}:\frac{2}{3}\) \(4x\frac{5}{9}\) \(\frac{3}{8}:2\)
tính bằng hai cách
a) \(\left(\frac{6}{11}+\frac{5}{11}\right)x\frac{3}{7}\) b) \(\frac{3}{5}x\frac{7}{9}+\frac{3}{5}x\frac{2}{9}\)
c) \(\left(\frac{6}{7}-\frac{4}{7}\right):\frac{2}{5}\) d) \(\frac{8}{15}:\frac{2}{11}+\frac{7}{15}:\frac{2}{11}\)
giúp mik nha
Tính nhanh
a) \(\frac{2}{3}\div\frac{4}{9}+\frac{1}{3}\div\frac{4}{9}=\)
b) \(\frac{9}{8}\div\frac{5}{7}-\frac{1}{8}\div\frac{5}{7}=\)
c) \(\frac{2}{5}\div\frac{7}{3}-\frac{2}{5}\div\frac{1}{3}=\)
d) \(\frac{3}{7}\div\frac{7}{3}+\frac{3}{7}\div\frac{9}{4}=\)
1. Tính nhanh
a) \(\frac{8}{7}\times\frac{2}{5}+\frac{6}{7}\times\frac{2}{5}=\)
b) \(\frac{40}{11}\times\frac{4}{7}-\frac{4}{7}\times\frac{7}{11}=\)
c)\(\frac{3}{4}\times\frac{6}{15}\times\frac{4}{3}=\)
d) \(\frac{1}{2}\times\frac{2}{3}\times\frac{4}{5}\times\frac{2}{3}\times\frac{5}{4}=\)
giúp mình nha mình cần gấp lắm
y +y :\(\frac{5}{2}\):4x\(\frac{3}{5}\)+y :\(\frac{2}{5}\): 4 = \(\frac{13}{20}\)
tìm x
x - 58 : 2 = 17
( x - 58 ) : 2 = 17
125 + ( 145 - x ) = 175
X x \(\frac{2}{5}=\frac{4}{5}:\frac{2}{3}\)
x + 3,75 + 4x = 24,25
( ai làm đúng mình tick cho )
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)\(\frac{8}{5}+\frac{7}{6}+\frac{5}{9}-2=?;3-\frac{5}{6}-\frac{4}{9}+\frac{32}{24}=?\)
Tinh nhanh : \(\frac{3x5x7x9}{5x7x9x12};\frac{2}{5}:\frac{3}{7}x\frac{3}{7}:\frac{2}{5}\)