Respuestas sección 1.2

Ejercicios 1 al 10, eliminación de signos de agrupación.

  1. $\hspace{0.1cm}5\\[0.2cm]$
  2. $\hspace{0.1cm}7\\[0.2cm]$
  3. $\hspace{0.1cm}20\\[0.2cm]$
  4. $\hspace{0.1cm}4\\[0.2cm]$
  5. $\hspace{0.1cm}50\\[0.2cm]$
  1. $\hspace{0.1cm}0\\\\[0.2cm]$
  2. $\hspace{0.1cm}8\\[0.2cm]$
  3. $\hspace{0.1cm}463\\[0.2cm]$
  4. $\hspace{0.1cm}51\\[0.2cm]$
  5. $\hspace{0.1cm}52\\[0.2cm]$

Ejercicios 11 al 20, operaciones con fraccionarios.

  1. $\hspace{0.1cm}\cfrac{1}{2}\\[0.2cm]$
  2. $\hspace{0.1cm}5\\[0.2cm]$
  3. $\hspace{0.1cm}8\frac {3}{11}\\[0.2cm]$
  4. $\hspace{0.1cm}1\frac {9}{22}\\[0.2cm]$
  5. $\hspace{0.1cm}3\frac{2}{9}\\[0.2cm]$
  1. $\hspace{0.1cm}1\\\\[0.2cm]$
  2. $\hspace{0.1cm}\cfrac{1}{50}\\[0.2cm]$
  3. $\hspace{0.1cm}21\frac{1}{3}\\[0.2cm]$
  4. $\hspace{0.1cm}4\frac{9}{58}\\[0.2cm]$
  5. $\hspace{0.1cm}2\frac{80}{279}\\[0.2cm]$

En los ejercicios 21 al 20, realiza los ejercios de aplicación con fraccionarios y simplifica, si es posible.

  1. $\hspace{0.1cm}\$18.000$
  2. $\cfrac{13}{24}\\[0.2cm]$
  3. $\hspace{0.1cm}15\frac{5}{12}\;$ horas$\\[0.2cm]$
  4. $\hspace{0.1cm}\cfrac{27}{40}\\[0.2cm]$
  5. $\hspace{0.1cm} 32\frac{13}{20}\;\\[0.2cm]$
  6. $\hspace{0.1cm}\$ 19\frac{7}{10}\;\\[0.2cm]$
  7. $\hspace{0.1cm}101\frac{5}{9}\;$ años$\\[0.2cm]$
  8. $\hspace{0.1cm}\$2.500\\[0.2cm]$
  1. $\hspace{0.1cm}\cfrac{17}{36}\\[0.2cm]$
  2. $\hspace{0.1cm}\$5.000\\[0.2cm]$
  3. $\hspace{0.1cm}60 \;y\; 12\;\text{ metros}\\[0.2cm]$
  4. $\hspace{0.1cm}800\;\text{ metros}\\[0.2cm]$
  5. $\hspace{0.1cm}\cfrac{16}{49}\\[0.2cm]$
  6. $\hspace{0.1cm}36\;$ años$\\[0.2cm]$
  7. $\hspace{0.1cm}84\;$ vacas$\\[0.2cm]$
  8. $\hspace{0.1cm}12\;$ metros$\\[0.2cm]$