=50/25=2 hoặc là viết nguyên 50/25
=50/25=2 hoặc là viết nguyên 50/25
Tính
a.\(\dfrac{4}{9}+\dfrac{3}{7}\) \(\dfrac{3}{4}+\dfrac{7}{24}\) \(\dfrac{1}{3}+\dfrac{2}{9}+\dfrac{4}{27}\)
b.\(\dfrac{5}{6}-\dfrac{3}{8}\) \(\dfrac{7}{15}-\dfrac{11}{30}\) \(\dfrac{2}{3}+\dfrac{1}{6}-\dfrac{7}{12}\)
c.\(\dfrac{18}{25}\times\dfrac{15}{6}\) \(\dfrac{30}{49}:\dfrac{6}{7}\) \(\dfrac{1}{2}\times\dfrac{3}{4}:\dfrac{6}{5}\)
d.\(8\times\dfrac{3}{5}:\dfrac{12}{5}\) \(4:\dfrac{9}{5}:\dfrac{10}{3}\)
3 bn đầu tiên xong mik sẽ tick
6. ÉT O ÉT
\(\dfrac{125}{90}=\dfrac{25}{...}\) / \(\dfrac{84}{91}=\dfrac{...}{13}\) / \(\dfrac{75}{...}=\dfrac{25}{15}=\dfrac{...}{3}\)
\(\dfrac{6}{7}=\dfrac{...}{21}=\dfrac{54}{...}=\dfrac{...}{126}\)
A,\(\dfrac{3}{5}+\dfrac{1}{6}\)
B,\(4+\dfrac{2}{5}\)
C,\(\dfrac{25}{12}-\dfrac{7}{6}\)
D,\(\dfrac{9}{7}-\dfrac{7}{6}\)
E,\(\dfrac{3}{7}\) x \(\dfrac{2}{5}\)
Tính:
a) \(\dfrac{11}{10}+\dfrac{3}{5}:\dfrac{2}{3}\)
b) \(\dfrac{4}{3}\) + 5 x \(\dfrac{5}{8}\)
c) \(\left(\dfrac{2}{5}+\dfrac{3}{7}\right)x\dfrac{25}{29}\)
d) \(\dfrac{1}{4}x\dfrac{5}{12}+\dfrac{5}{12}x\dfrac{4}{5}\)
\(\dfrac{5}{2}\) bằng :
a. \(\dfrac{25}{10}\) b. \(\dfrac{50}{20}\) c. \(\dfrac{15}{6}\) d. \(\dfrac{20}{8}\)
chọn cái nào h :)?
bài 1 : tìm x
a) x + \(\dfrac{7}{8}\) = \(\dfrac{13}{2}\) : 4
b) x : \(\dfrac{5}{3}\) = \(\dfrac{6}{5}\) - \(\dfrac{2}{3}\)
bài 2 : giá trị của biểu thức \(\dfrac{28}{25}\) : \(\dfrac{7}{15}_{ }\) x 5 là ....
so sánh hai phân số: a, \(\dfrac{5}{8}\) và \(\dfrac{7}{8}\) b, \(\dfrac{15}{25}\) và \(\dfrac{4}{5}\)
Trong phép tính sau, giá trị của x là :
\(\dfrac{5}{9}\) : x = \(\dfrac{8}{9}\) - \(\dfrac{1}{5}\)
a. \(\dfrac{11}{6}\)
b. \(\dfrac{44}{30}\)
c. \(\dfrac{25}{31}\)
d. \(\dfrac{22}{15}\)
1. Tính nhanh:
A, \(\dfrac{7}{9}\) x \(\dfrac{25}{28}\) x \(\dfrac{9}{7}\)
B, \(\dfrac{4}{7}\) x \(\dfrac{17}{18}\) x \(\dfrac{7}{4}\) x \(\dfrac{18}{17}\)
Giúp mình với ạ. Mình sẽ tick