Question

1. Thực hiện phép tính :

a, \(\frac{11}{125}\)- \(\frac{17}{18}\)- \(\frac{5}{7}\)- \(\frac{4}{9}\)- \(\frac{17}{14}\)

b, 1- \(\frac{1}{2}\)+2 - \(\frac{2}{3}\) + 3 - \(\frac{3}{4}\) + 4 - \(\frac{1}{4}\) - 3 - \(\frac{1}{3}\) -2 - \(\frac{1}{2}\) - 1

c, (-\(\frac{40}{51}\) . 0,32 . \(\frac{17}{20}\) ) : \(\frac{64}{75}\)

d, -\(\frac{10}{11}\) . \(\frac{8}{9}\) + \(\frac{7}{18}\) . \(\frac{10}{18}\)

e, \(\frac{3}{14}\) : \(\frac{1}{28}\) - \(\frac{13}{21}\) : \(\frac{1}{28}\) + \(\frac{28}{42}\) : \(\frac{1}{28}\) - 8

Answer 1

e, \(\frac{3}{14}:\frac{1}{28}-\frac{13}{21}:\frac{1}{28}+\frac{28}{42}:\frac{1}{28}-8\)

\(=\left(\frac{3}{14}-\frac{13}{21}+\frac{2}{3}\right):\frac{1}{28}-8\)

\(=\frac{11}{42}:\frac{1}{28}-8\)

\(=\frac{22}{3}-8\)

\(=-\frac{2}{3}\)

Answer 2

e, \(\frac{3}{14}:\frac{1}{28}-\frac{13}{21}:\frac{1}{28}+\frac{28}{42}:\frac{1}{28}-8\)

\(=\left(\frac{3}{14}-\frac{13}{21}+\frac{2}{3}\right):\frac{1}{28}-8\)

\(=\frac{11}{42}:\frac{1}{28}-8\)

\(=\frac{22}{3}-8\)

\(=-\frac{2}{3}\)