Subtract the numbers:
| \(\displaystyle -\) | \(\displaystyle 6\) | \(\displaystyle 7\) |
| \(\displaystyle 5\) | \(\displaystyle 7\) | |
For subtracting whole numbers one can write the subtrahend under the minuend in columns, so that the place values are lined up.
1. Subtract from the ones of \(\displaystyle 6\color{red}{7}\) (it is number \(\displaystyle \color{red}{7}\)) the ones of \(\displaystyle 5\color{red}{7}\) (it is number \(\displaystyle \color{red}{7}\)):
\(\displaystyle \color{red}{7}-\color{red}{7}=\color{red}{0}{\small . }\)
| \(\displaystyle -\) | \(\displaystyle 6\) | \(\displaystyle \color{red}{ 7}\) |
| \(\displaystyle 5\) | \(\displaystyle \color{red}{ 7}\) | |
| \(\displaystyle ?\) | \(\displaystyle \color{red}{ 0}\) |
2. Subtract from the tens of \(\displaystyle \color{red}{6}7\) (it is number \(\displaystyle \color{red}{6}\)) the tens of \(\displaystyle \color{red}{5}7\) (it is number \(\displaystyle \color{red}{5}\)):
\(\displaystyle \color{red}{6}-\color{red}{5}=\color{red}{1}{\small . }\)
| \(\displaystyle -\) | \(\displaystyle \color{red}{ 6}\) | \(\displaystyle 7\) |
| \(\displaystyle \color{red}{ 5}\) | \(\displaystyle 7\) | |
| \(\displaystyle \color{red}{ 1}\) | \(\displaystyle 0\) |
So,
| \(\displaystyle -\) | \(\displaystyle 6\) | \(\displaystyle 7\) |
| \(\displaystyle 5\) | \(\displaystyle 7\) | |
| \(\displaystyle 1\) | \(\displaystyle 0\) |
Answer: \(\displaystyle 10{\small .}\)