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Single Digit Additions 2/1

1. $\begin{array}{r}
&1\\
&2\\
+\!\!\!\!\!\,&3\\
\hline
\end{array}$


2. $\begin{array}{r}
&2\\
&4\\
+\!\!\!\!\!\,&5\\
\hline
\end{array}$


3. $\begin{array}{r}
&4\\
&5\\
+\!\!\!\!\!\,&8\\
\hline
\end{array}$


4. $\begin{array}{r}
&5\\
&2\\
+\!\!\!\!\!\,&6\\
\hline
\end{array}$


5. $\begin{array}{r}
&3\\
&7\\
+\!\!\!\!\!\,&5\\
\hline
\end{array}$


6. $\begin{array}{r}
&2\\
&4\\
+\!\!\!\!\!\,&6\\
\hline
\end{array}$


7. $\begin{array}{r}
&9\\
&1\\
+\!\!\!\!\!\,&2\\
\hline
\end{array}$


8. $\begin{array}{r}
&4\\
&5\\
+\!\!\!\!\!\,&6\\
\hline
\end{array}$


9. $\begin{array}{r}
&6\\
&7\\
+\!\!\!\!\!\,&8\\
\hline
\end{array}$


10. $\begin{array}{r}
&2\\
&9\\
+\!\!\!\!\!\,&1\\
\hline
\end{array}$