37 – 19 = ...	74 – 25 = ...	48 – 9 = ...	56 –8 = ...
63 – 34 = ...	93 – 85 = ...	50 – 12 = ...	71 – 38 = ...
75 – 57 = ...	81 – 42 = ...	72 – 28 = ...	34 – 12 = ...
96 – 27 = ...	77 – 48 = ...	88 – 15 = ...	97 – 58 = ...
72 – 33 = ...	74 – 49 = ...	93 – 45 = ...	93 – 15 = ...

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{80}\\{\,\,6}\end{array}} \\\,\,\,\,74\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{26}\\{\,\,7}\end{array}} \\\,\,\,\,19\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{55}\\{\,\,8}\end{array}} \\\,\,\,\,47\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{77}\\{\,\,9}\end{array}} \\\,\,\,\,68\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{71}\\{\,\,5}\end{array}} \\\,\,\,\,66\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{72}\\{\,\,8}\end{array}} \\\,\,\,\,64\end{array}\)

\[\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{53}\\{\,\,4}\end{array}} \\\,\,\,\,49\end{array}\]

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{68}\\{\,\,\,9}\end{array}} \\\,\,\,\,59\end{array}\)

\[\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{40}\\{28}\end{array}} \\\,\,\,\,12\end{array}\]

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{70}\\{55}\end{array}} \\\,\,\,\,15\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{45}\\{26}\end{array}} \\\,\,\,\,19\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{53}\\{19}\end{array}} \\\,\,\,\,34\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{30}\\{12}\end{array}} \\\,\,\,\,18\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{62}\\{34}\end{array}} \\\,\,\,\,28\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{92}\\{66}\end{array}} \\\,\,\,\,26\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{83}\\{35}\end{array}} \\\,\,\,\,48\end{array}\)