\(\dfrac{3}{4}+\dfrac{5}{8}=\dfrac{6}{8}+\dfrac{5}{8}=\dfrac{11}{8}\)
\(6-\dfrac{3}{7}=\dfrac{6}{1}-\dfrac{3}{7}=\dfrac{42}{7}-\dfrac{3}{7}=\dfrac{39}{7}\)
\(\dfrac{3}{4}\times\dfrac{2}{5}=\dfrac{3\times2}{4\times5}=\dfrac{6}{20}=\dfrac{3}{10}\)
\(\dfrac{3}{7}:\dfrac{4}{9}=\dfrac{3}{7}\times\dfrac{9}{4}=\dfrac{27}{28}\)
\(\dfrac{3}{7}\) + 4 = ?
\(\dfrac{5}{9}\) x 3 = ?
\(\dfrac{7}{8}\) - \(\dfrac{2}{9}\)= ?
5 - \(\dfrac{3}{4}\)= ?
\(\dfrac{5}{7}\) : 6 = ?
\(\dfrac{5}{6}\) x \(\dfrac{2}{7}\)= ?
3 + \(\dfrac{3}{4}\)= ?
\(\dfrac{3}{5}x\dfrac{4}{8}\) = ?
5 : \(\dfrac{3}{8}\)= ?
Mong mn trả lời
a,\(\dfrac{2}{3}\)x\(\dfrac{5}{2}\):\(\dfrac{9}{5}\)
b,\(\dfrac{1}{3}\)x\(\dfrac{1}{4}\)+\(\dfrac{5}{6}\)
c,\(\dfrac{1}{2}\)-\(\dfrac{7}{8}\):\(\dfrac{7}{4}\)
d,\(\dfrac{6}{5}\)-\(\dfrac{4}{5}\)x\(\dfrac{3}{2}\)
\(\dfrac{3}{4}\) + 3 \(\dfrac{5}{2}\) x 4 2 - \(\dfrac{7}{8}\)\(\) \(\dfrac{9}{4}\) - 2 5 : \(\dfrac{5}{7}\) \(\dfrac{5}{6}\) : \(\dfrac{2}{4}\) giúp mik vớiii
a,\(\dfrac{7}{8}\)x\(\dfrac{2}{5}\)
b,\(\dfrac{9}{4}\)\(-\)\(\dfrac{5}{6}\)
c,\(\dfrac{4}{7}\)x\(\dfrac{2}{5}\)
d,\(\dfrac{3}{5}\)+2
e,4 \(-\) \(\dfrac{3}{5}\)
g,3x\(\dfrac{4}{9}\)
h,\(\dfrac{9}{5}\): 2
a,\(\dfrac{4}{9}\) : \(\dfrac{3}{10}\)
b,\(\dfrac{3}{7}\) x \(\dfrac{5}{7}\)
c,\(\dfrac{4}{9}\) : \(\dfrac{3}{2}\)
D \(\dfrac{3}{9}\) + \(\dfrac{5}{6}\) x \(\dfrac{2}{3}\)
E \(\dfrac{2}{7}\) x \(\dfrac{4}{3}\) + \(\dfrac{2}{6}\)
G \(\dfrac{4}{7}\) : 2 + \(\dfrac{4}{7}\)
\(\dfrac{4}{3}\)+3 \(\dfrac{5}{2}\)x 4 2-\(\dfrac{7}{8}\) \(\dfrac{9}{4}\)-2 5:\(\dfrac{5}{7}\) \(\dfrac{5}{6}\):\(\dfrac{2}{7}\)
Giups mình với
bài 1 :
a) \(\dfrac{2}{5}+\dfrac{3}{8}=\) b)\(\dfrac{7}{6}-\dfrac{2}{3}=\) c)\(\dfrac{5}{9}\times6\) d)\(\dfrac{8}{5}:\dfrac{4}{7}=\)
bài 2:
a) \(\dfrac{4}{5}+\) x =\(\dfrac{5}{6}\) b)x : \(\dfrac{7}{10}=5\)
bài 3 : hai xe ô tô chở được tất cả 16 tấn 8 tạ hàng . Xe ô tô thứ nhất chở được nhiều hơn xe ô tô thứ hai 2 tấn 6 tạ hàng . Hỏi mỗi xe chở được bao nhiêu tạ hàng
bài 4 :
145 \(\times\) 69 + 22 x 145 +145 x 8 + 145 =
Tính bằng cách thuận tiện nhất:
a) 60 x (\(\dfrac{7}{12}\) + \(\dfrac{4}{15}\))
b) \(\dfrac{1}{2}\) x \(\dfrac{2}{3}\) x \(\dfrac{3}{4}\) x \(\dfrac{4}{5}\) x \(\dfrac{5}{6}\) x \(\dfrac{6}{7}\) x \(\dfrac{7}{8}\) x \(\dfrac{8}{9}\)
a,\(\dfrac{2}{9}+\dfrac{1}{6}\)
b,\(\dfrac{5}{6}-\dfrac{4}{7}\)
c,\(\dfrac{3}{8}\)x\(\dfrac{6}{15}\)
d,\(\dfrac{7}{12}:\dfrac{4}{7}\)
e,\(\dfrac{4}{7}:3\)
