\(\frac{3}{7}+\frac{4}{7}=\frac{3+4}{7}=\frac{7}{7}=1\)
\(\frac{3}{7}+\frac{4}{7}=\frac{3+4}{7}\)
\(=\frac{7}{7}=1\)
3/7 + 4/7 = 7/7 = 1
ủng hộ mk nha
\(\frac{3}{7}+\frac{4}{7}=\frac{3+4}{7}=\frac{7}{7}=1\)
\(\frac{3}{7}+\frac{4}{7}=\frac{3+4}{7}\)
\(=\frac{7}{7}=1\)
3/7 + 4/7 = 7/7 = 1
ủng hộ mk 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) \(\frac{3}{7}\div\frac{7}{3}+\frac{3}{7}\div\frac{9}{4}=\)
tính nhanh
\(\frac{4}{9}x\frac{3}{7}+\frac{5}{7}x\frac{4}{9}-\frac{4}{9}x\frac{1}{7}\)
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)\(\frac{8}{5}+\frac{7}{6}+\frac{5}{9}-2=?;3-\frac{5}{6}-\frac{4}{9}+\frac{32}{24}=?\)
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
\(\frac{1}{1×2}+\frac{1}{2×3}\: +\frac{1}{3×4}\: +\frac{1}{4×5}+\frac{1}{5×6}\: +\frac{1}{6×7}+\frac{1}{7×8}+\frac{1}{8×9}\: =?\)
\(\frac{4}{7}+\frac{3}{7}< x< \frac{5}{3}\frac{2}{3}\)
Sắp xếp các phân số sau theo thứ tự từ bé đến lớn:\(\frac{3}{7};\frac{3}{4};\frac{7}{3};\frac{1}{4};\frac{19}{18};1\)
\(3\frac{1}{5}+4\frac{1}{3}=\left(3+....\right)+\left(\frac{1}{5}+\frac{1}{3}\right)=7+\frac{...}{15}=7\frac{ }{15}\)
Đúng ghi Đ, sai ghi S vào chỗ chấm:
a) \(\frac{3}{7}+\frac{1}{3}x\frac{3}{7}=\frac{16}{21}x\frac{3}{7}=\frac{16}{49}\) ......
b)\(\frac{5}{9}+\frac{1}{5}x\frac{5}{6}=\frac{5}{9}x\frac{1}{6}=\frac{13}{18}\) ......
c)\(\frac{13}{9}-\frac{7}{9}:\frac{2}{3}=\frac{6}{9}:\frac{3}{2}=1\) ......
d)\(\frac{11}{8}-\frac{5}{8}:\frac{3}{4}=\frac{11}{8}-\frac{5}{8}x\frac{4}{3}=\frac{11}{8}-\frac{10}{24}=\frac{23}{24}\) ......