Violympic toán 7
Các câu hỏi tương tự
Thực hiện phép tính:
\(\frac{3+0,75-\frac{3}{19}}{\frac{5}{2}+0,625-\frac{5}{38}}\cdot\frac{15+\frac{15}{17}-\frac{15}{144}+\frac{15}{34}}{2+\frac{3}{17}-\frac{2}{144}}+2018\)
tính: A = \(\dfrac{15}{34}+\dfrac{27}{21}+\dfrac{9}{34}-1\dfrac{15}{17}+\dfrac{2}{3}\)
B = \(16\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)-28\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)\)
Bài 1 B, 4^1/5:(-2^4/5) c, 1,8:(-3/4) d, 17/15:4/3 e, -12/21:34/43
bt.1 tính
a )-1/12 - (2 trên 5/8 - 1/3)
b 18/ 39 . (- 1 trên 5/8 ) : (-6 trên 3/4 )
c ) 0,75 -0,6 + 3/7 + 3/15 phần 2 ,75 - 2,2 + 11/7 +11/17
I. thực hiện phép tính
a. \(\dfrac{15}{34}+\dfrac{7}{21}+\dfrac{19}{34}-\dfrac{20}{15}+\dfrac{3}{7}\)
b. \(\dfrac{27}{25}+\dfrac{4}{21}-\dfrac{2}{25}+\dfrac{17}{21}-\dfrac{1}{2}\)
câu 1 . Thực hiện phép tính
a. 0,05 + 5 - dfrac{1}{2}
b. dfrac{6}{15}-dfrac{7}{8}+3-dfrac{3}{5}-dfrac{2}{16}
c. dfrac{3}{5}.dfrac{15}{7}-dfrac{15}{7}.dfrac{8}{5}
d. dfrac{2}{5.7}+dfrac{2}{7.9}+dfrac{2}{9.11}+....+dfrac{2}{93.99}
e. dfrac{7}{4}:dfrac{-9}{8}-dfrac{3}{9}
f. dfrac{15}{17}.dfrac{19}{21}+dfrac{19}{21}.dfrac{2}{17}+dfrac{13}{21}
g. left(4-dfrac{5}{12}right):2+dfrac{5}{24}
Đọc tiếp
câu 1 . Thực hiện phép tính
a. 0,05 + 5 - \(\dfrac{1}{2}\)
b. \(\dfrac{6}{15}-\dfrac{7}{8}+3-\dfrac{3}{5}-\dfrac{2}{16}\)
c. \(\dfrac{3}{5}.\dfrac{15}{7}-\dfrac{15}{7}.\dfrac{8}{5}\)
d. \(\dfrac{2}{5.7}+\dfrac{2}{7.9}+\dfrac{2}{9.11}+....+\dfrac{2}{93.99}\)
e. \(\dfrac{7}{4}:\dfrac{-9}{8}-\dfrac{3}{9}\)
f. \(\dfrac{15}{17}.\dfrac{19}{21}+\dfrac{19}{21}.\dfrac{2}{17}+\dfrac{13}{21}\)
g. \(\left(4-\dfrac{5}{12}\right):2+\dfrac{5}{24}\)
A = 15/34 + 7/21 + 9/34 - 1l15/17 + 2/3
\(a.A=[\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}+\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}]+\frac{1890}{2005}+115\)
b.B=\(\left[\frac{1\frac{11}{31}\cdot4\frac{3}{7}-\left(15-6\cdot\frac{1}{3}\cdot\frac{2}{19}\right)}{4\frac{5}{6}+\frac{1}{6}\left(42-5\frac{1}{3}\right)}\cdot\left(-1\frac{19}{93}\right)\right]\cdot\frac{31}{50}\)
Tính
A) \(\frac{15}{34}+\frac{7}{21}+\frac{19}{34}-1\frac{15}{17}+\frac{2}{3}\)
B) \(\left(-2\right)^3\times\left(\frac{3}{4}-0,25\right):\left(2\frac{1}{4}-1\frac{1}{6}\right)\)
Tìm x
A) \(4\frac{1}{3}:\frac{\chi}{4}=6:0,3\)
B) \(\left(2^3:4\right)\times2^{\left(\chi+1\right)}=64\)