&3\\
+\!\!\!\!\!\,&\\
\hline
&5\\
\hline
\end{array}$
2. $\begin{array}{r}
&6\\
+\!\!\!\!\!\,&\\
\hline
&8\\
\hline
\end{array}$
3. $\begin{array}{r}
&3\\
+\!\!\!\!\!\,&\\
\hline
&8\\
\hline
\end{array}$
4. $\begin{array}{r}
&2\\
+\!\!\!\!\!\,&\\
\hline
&7\\
\hline
\end{array}$
5. $\begin{array}{r}
&4\\
+\!\!\!\!\!\,&\\
\hline
&9\\
\hline
\end{array}$
6. $\begin{array}{r}
&6\\
+\!\!\!\!\!\,&\\
\hline
&9\\
\hline
\end{array}$
7. $\begin{array}{r}
&3\\
+\!\!\!\!\!\,&\\
\hline
&9\\
\hline
\end{array}$
8. $\begin{array}{r}
&6\\
+\!\!\!\!\!\,&\\
\hline
&8\\
\hline
\end{array}$
9. $\begin{array}{r}
&4\\
+\!\!\!\!\!\,&\\
\hline
&10\\
\hline
\end{array}$
10. $\begin{array}{r}
&5\\
+\!\!\!\!\!\,&\\
\hline
&10\\
\hline
\end{array}$