Tuyển Cộng tác viên Hoc24 nhiệm kì 28 tại đây: https://forms.gle/GrfwFgzveoKLVv3p6
Các câu hỏi tương tự
\(\frac{4}{3\times7}+\frac{5}{7\times12}+\frac{1}{12\times13}+\frac{7}{13\times20}+\frac{3}{20\times23}\)
\(\frac{3}{5\times9}+\frac{3}{9\times13}+\frac{3}{13\times17}+...+\frac{3}{37\times41}+\frac{3}{41\times45}\)
\(\frac{37:13-3}{24+37\cdot12}\)
\(11\times12\times13\times14\)
( 37 . 13 -13 ) : ( 24 + 37 . 12 )
2019*2016-1009-1000-2019*2015
47*(53-37)-53*(47-37)
2016*83+1008*34
(37*13-13) : (24+37*12)
Tính nhanh:
a) 35 x 12 + 65 x 13
b) (37 x 13 - 13 ) : ( 24 + 37 x 12 )
\(\dfrac{75}{100}\)-\(\dfrac{17}{25}\)+\(\dfrac{13}{37}\)+\(\dfrac{1}{4}\)-\(\dfrac{8}{25}\)+\(\dfrac{24}{37}\)
\(x-\left(\frac{20}{11\times13}+\frac{20}{13\times15}+\frac{20}{15\times17}+...+\frac{20}{53\times55}\right)=\frac{3}{11}\)