$0,48+\frac{14}{19}=0,48+0,74=1,22$
$\frac{14}{19}\approx 0,74$
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}14\\ \phantom{0}\underset{¯}{0}\\ \underset{¯}{\phantom{0}}140\\ \underset{¯}{133}\\ \phantom{0}\underset{¯}{\phantom{0}}70\\ \phantom{00}\underset{¯}{57}\\ \phantom{0}\underset{¯}{\phantom{0}}130\\ \phantom{00}\underset{¯}{114}\\ \phantom{0000}16\text{...}\end{array}& \begin{array}{l}\overline{)19}\\ \overline{\overline{)\mathrm{0,736...}}}\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}\mathrm{0,48}\\ \mathrm{0,74}\end{array}}\\ \begin{array}{r}\mathrm{1,22 }\end{array}\end{array}$

$2\frac{5}{14}-<!--\; -\; -->1,29=2,36-<!--\; -\; -->1,29=1,07$
$2\frac{5}{14}\approx 2,36$
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}5\\ \phantom{0}\underset{¯}{0}\\ \underset{¯}{\phantom{0}}50\\ \phantom{0}\underset{¯}{42}\\ \phantom{0}\underset{¯}{\phantom{0}}80\\ \phantom{00}\underset{¯}{70}\\ \phantom{0}\underset{¯}{\phantom{0}}100\\ \phantom{000}\underset{¯}{98}\\ \phantom{0000}2\text{...}\end{array}& \begin{array}{l}\overline{)14}\\ \overline{\overline{)\mathrm{0,357...}}}\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}\mathrm{2,36}\\ \mathrm{1,29}\end{array}}\\ \begin{array}{r}\mathrm{1,07 }\end{array}\end{array}$