Các câu hỏi tương tự
Tính:
1,\(\frac{2}{5}+\left(-\frac{4}{5}\right)+\left(-\frac{1}{2}\right)\)
2,\(A=\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
3,\(B=\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{\frac{2}{3}-\frac{2}{7}-\frac{2}{13}}.\frac{\frac{1}{3}-0,25+0,2}{1\frac{1}{6}-0,875+0,7}+\frac{6}{7}\)
tính \(\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)
Tính nhanh :
a) \(\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)
a) A = 11\(\frac{3}{13}\) - \(\left(3\frac{4}{7}+6\frac{3}{13}\right)\) b) B = \(\left(7\frac{4}{9}+3\frac{8}{13}\right)\)- \(5\frac{4}{9}\)
c) C = \(\frac{-2}{7}.\frac{5}{11}+\frac{-2}{7}.\frac{6}{11}+5\frac{4}{7}\) d) D = 0,7 . 1\(\frac{3}{5}\). 30 . 0,375 . \(\frac{4}{7}\)
Tính nhanh:a) 2.frac{3}{7}+left(frac{2}{9}-1frac{3}{7}right)-frac{5}{3}:frac{1}{9} b) frac{-11}{23}.frac{6}{7}+frac{8}{7}.frac{-11}{23}-frac{1}{23} c )left(frac{377}{-231}-frac{123}{89}+frac{34}{791}right).left(frac{1}{6}-frac{1}{8}-frac{1}{24}right) d) 19frac{5}{8}:frac{7}{12}-15frac{1}{4}:frac{7}{12} e) frac{2}{5}.frac{1}{3}-frac{2}{15}:frac{1}{5}+frac{3}{5}.frac{1}{3}
Đọc tiếp
Tính nhanh:
a) \(2.\frac{3}{7}+\left(\frac{2}{9}-1\frac{3}{7}\right)-\frac{5}{3}:\frac{1}{9}\)
b) \(\frac{-11}{23}.\frac{6}{7}+\frac{8}{7}.\frac{-11}{23}-\frac{1}{23}\)
c )\(\left(\frac{377}{-231}-\frac{123}{89}+\frac{34}{791}\right).\left(\frac{1}{6}-\frac{1}{8}-\frac{1}{24}\right)\)
d) \(19\frac{5}{8}:\frac{7}{12}-15\frac{1}{4}:\frac{7}{12}\)
e) \(\frac{2}{5}.\frac{1}{3}-\frac{2}{15}:\frac{1}{5}+\frac{3}{5}.\frac{1}{3}\)
0,7. 2\(\frac{2}{3}\).20. 0,375. \(\frac{5}{28}\)
\(A=\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-42}{\frac{3}{4}+0,5-\frac{3}{10}}\)=?
rút gọn:
C=\(\frac{0,25-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)
Bài 1: A0,7 . 2frac{2}{3}. 20 . 0,375 . frac{5}{28}B( 9,75 .21frac{3}{7} + frac{39}{4}. 18frac{4}{7}) Bài 2a)(x + frac{1}{2}) . (frac{2}{3}- 2x ) 0b)frac{2}{3}x-frac{1}{2}xfrac{5}{12}c) x .3frac{1}{4}+left(-frac{7}{6}right).x-1frac{2}{3}frac{5}{12}d)5frac{8}{17}:x+left(frac{-4}{17}right):x+3frac{1}{7}:17frac{1}{3} frac{4}{11}
Đọc tiếp
Bài 1:
A=0,7 . \(2\frac{2}{3}\). 20 . 0,375 . \(\frac{5}{28}\)
B=( 9,75 .\(21\frac{3}{7}\) + \(\frac{39}{4}\). \(18\frac{4}{7}\))
Bài 2
a)(x + \(\frac{1}{2}\)) . (\(\frac{2}{3}\)- 2x ) = 0
b)\(\frac{2}{3}x-\frac{1}{2}x=\frac{5}{12}\)
c) x .\(3\frac{1}{4}+\left(-\frac{7}{6}\right).x-1\frac{2}{3}=\frac{5}{12}\)
d)\(5\frac{8}{17}:x+\left(\frac{-4}{17}\right):x+3\frac{1}{7}:17\frac{1}{3}\)= \(\frac{4}{11}\)