QuestionAdd. $$\frac{3}{6}+\frac{7}{12}=$$ $\square$
Use the model to help you. \begin{tabular}{|c|c|c|} \hline$\frac{1}{\mid}$ & $\frac{1}{6}$ & $\frac{1}{6}$ \\ \hline \end{tabular} $+$\begin{tabular}{|l|l|l|l|l|l|l|} \hline$\frac{1}{12}$ & $\frac{1}{12}$ & $\frac{1}{12}$ & $\frac{1}{12}$ & $\frac{1}{12}$ & $\frac{1}{12}$ & $\frac{1}{12}$ \\ \hline \end{tabular}