tính 19 + 64
28/44
\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{19}\\{64}\end{array}} \\\,\,\,\,83\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{38}\\{48}\end{array}} \\\,\,\,\,86\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{37}\\{24}\end{array}} \\\,\,\,\,61\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{18}\\{65}\end{array}} \\\,\,\,\,83\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{16}\\{25}\end{array}} \\\,\,\,\,41\end{array}\) | \[\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{29}\\{22}\end{array}} \\\,\,\,\,51\end{array}\] | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{22}\\{39}\end{array}} \\\,\,\,\,61\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{19}\\{27}\end{array}} \\\,\,\,\,46\end{array}\) |