Single Digit Subtractions 1/3

1. $\begin{array}{r}
&4\\
-\!\!\!\!\!\,&4\\
\hline \\
\hline
\end{array}$


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


3. $\begin{array}{r}
&9\\
-\!\!\!\!\!\,&9\\
\hline \\
\hline
\end{array}$


4. $\begin{array}{r}
&7\\
-\!\!\!\!\!\,&7\\
\hline \\
\hline
\end{array}$


5. $\begin{array}{r}
&8\\
-\!\!\!\!\!\,&8\\
\hline \\
\hline
\end{array}$


6. $\begin{array}{r}
&8\\
-\!\!\!\!\!\,&6\\
\hline \\
\hline
\end{array}$


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


8. $\begin{array}{r}
&8\\
-\!\!\!\!\!\,&6\\
\hline \\
\hline
\end{array}$


9. $\begin{array}{r}
&3\\
-\!\!\!\!\!\,&1\\
\hline \\
\hline
\end{array}$


10. $\begin{array}{r}
&6\\
-\!\!\!\!\!\,&5\\
\hline \\
\hline
\end{array}$