phép cộng phân số: 1/2 + 1/4 =

\(\begin{array}{*{20}{c}}1\\\hline2\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline4\end{array}\)

\(\begin{array}{*{20}{c}}3\\\hline5\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{10}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{10}\end{array}\)

\(\begin{array}{*{20}{c}}3\\\hline4\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline8\end{array}\)

\(\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{18}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline2\end{array}\)

\[\begin{array}{*{20}{c}}5\\\hline6\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{12}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{12}\end{array}\]

\[\begin{array}{*{20}{c}}7\\\hline8\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{16}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{19}\\\hline{16}\end{array}\]

\(\begin{array}{*{20}{c}}7\\\hline{12}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{24}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{19}\\\hline{24}\end{array}\)

\(\begin{array}{*{20}{c}}{13}\\\hline{30}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{60}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{60}\end{array}\)

\[\begin{array}{*{20}{c}}4\\\hline{11}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{22}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline2\end{array}\]

\(\begin{array}{*{20}{c}}{17}\\\hline{20}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{40}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline8\end{array}\)

\(\begin{array}{*{20}{c}}2\\\hline{13}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{15}\\\hline{26}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{19}\\\hline{26}\end{array}\)

\(\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{24}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}5\\\hline6\end{array}{\rm{ }}\)

\[\begin{array}{*{20}{c}}7\\\hline{12}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline2\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{12}\end{array}\]

\[\begin{array}{*{20}{c}}2\\\hline3\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{12}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{19}\\\hline{12}\end{array}\]

\(\begin{array}{*{20}{c}}{11}\\\hline{42}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{14}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline3\end{array}\)

\(\begin{array}{*{20}{c}}{13}\\\hline{35}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{70}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline2\end{array}\)

\(\begin{array}{*{20}{c}}{17}\\\hline{48}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{96}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{32}\end{array}\)

\(\begin{array}{*{20}{c}}{37}\\\hline{66}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{132}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{25}\\\hline{44}\end{array}{\rm{ }}\)

\[\begin{array}{*{20}{c}}7\\\hline{15}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{22}\\\hline{45}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{43}\\\hline{45}\end{array}\]

\(\begin{array}{*{20}{c}}5\\\hline{12}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline4\end{array}{\rm{ }}\)

\(\begin{array}{*{20}{c}}3\\\hline{16}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{16}\end{array}{\rm{ }}\)

\[\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{14}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{11}\\\hline{14}\end{array}\]

\(\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{17}\\\hline{40}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline5\end{array}\)

\(\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{22}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{22}\end{array}\)

\[\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline3\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline9\end{array}{\rm{ }}\]

\(\begin{array}{*{20}{c}}5\\\hline{14}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{28}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{28}\end{array}\)

\[\begin{array}{*{20}{c}}9\\\hline{20}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline4\end{array}\]

\(\begin{array}{*{20}{c}}3\\\hline5\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline{10}\end{array}\)

\[\begin{array}{*{20}{c}}{14}\\\hline{21}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{42}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{42}\end{array}{\rm{ }}\]

\(\begin{array}{*{20}{c}}{17}\\\hline{36}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{18}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{43}\\\hline{36}\end{array}{\rm{ }}\)

\[\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{10}\\\hline{27}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{22}\\\hline{27}\end{array}\]

\(\begin{array}{*{20}{c}}8\\\hline3\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{36}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{121}\\\hline{36}\end{array}\)

\[\begin{array}{*{20}{c}}{16}\\\hline{75}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{61}\\\hline{75}\end{array}{\rm{ }}\]

\(\begin{array}{*{20}{c}}{40}\\\hline{49}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}2\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{54}\\\hline{49}\end{array}\)

\(\begin{array}{*{20}{c}}{31}\\\hline{51}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{17}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{40}\\\hline{51}\end{array}{\rm{ }}\)

\(\begin{array}{*{20}{c}}{29}\\\hline{50}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{23}\\\hline{25}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline2\end{array}\)

\[\begin{array}{*{20}{c}}{13}\\\hline{30}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{15}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline6\end{array}\]

\(\begin{array}{*{20}{c}}{17}\\\hline{40}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{20}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{23}\\\hline{40}\end{array}\)

\(\begin{array}{*{20}{c}}9\\\hline{28}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{19}\\\hline{56}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{56}\end{array}\)

\(\begin{array}{*{20}{c}}{13}\\\hline{36}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{72}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{72}\end{array}\)

\[\begin{array}{*{20}{c}}{17}\\\hline{40}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{80}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{47}\\\hline{80}\end{array}\]

\(\begin{array}{*{20}{c}}{10}\\\hline{33}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{66}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{25}\\\hline{66}\end{array}\)

\(\begin{array}{*{20}{c}}7\\\hline{90}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{45}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}\)

\(\begin{array}{*{20}{c}}{13}\\\hline{42}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{84}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{31}\\\hline{84}\end{array}\)

\[\begin{array}{*{20}{c}}{19}\\\hline{60}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{120}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{49}\\\hline{120}\end{array}\]

\(\begin{array}{*{20}{c}}{13}\\\hline9\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}4\\\hline{81}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{121}\\\hline{81}\end{array}\)

\(\begin{array}{*{20}{c}}{51}\\\hline{26}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{52}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{109}\\\hline{52}\end{array}\)

\(\begin{array}{*{20}{c}}{11}\\\hline9\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{36}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{12}\end{array}\)

\[\begin{array}{*{20}{c}}6\\\hline5\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{19}\\\hline{95}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline5\end{array}\]

\(\begin{array}{*{20}{c}}{21}\\\hline{25}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{75}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{76}\\\hline{75}\end{array}\)

\(\begin{array}{*{20}{c}}9\\\hline8\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{40}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline5\end{array}\)

\(\begin{array}{*{20}{c}}8\\\hline3\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{30}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{91}\\\hline{30}\end{array}\)

\[\begin{array}{*{20}{c}}9\\\hline5\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{17}\\\hline{50}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{107}\\\hline{50}\end{array}\]

\(\begin{array}{*{20}{c}}{11}\\\hline6\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{24}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline8\end{array}\)

\(\begin{array}{*{20}{c}}1\\\hline{42}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{31}\\\hline{14}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{47}\\\hline{21}\end{array}\)

\(\begin{array}{*{20}{c}}{35}\\\hline{56}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}3\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{59}\\\hline{56}\end{array}\)

\[\begin{array}{*{20}{c}}{63}\\\hline{50}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{100}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{133}\\\hline{100}\end{array}\]

\(\begin{array}{*{20}{c}}4\\\hline{27}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{81}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{25}\\\hline{81}\end{array}\)

\(\begin{array}{*{20}{c}}{65}\\\hline{48}\end{array}{\rm{ }} + {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{96}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{137}\\\hline{96}\end{array}\)