699 − 250 = 449
700 − 250 = 450
250 − 250 = 0
700 − 699 = 1
700 − 700 = 0
700 − 250 = 450
Вычисления:
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}699\\ 250\end{array}}\\ \begin{array}{r}449\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}700\\ 250\end{array}}\\ \begin{array}{r}450\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}250\\ 250\end{array}}\\ \begin{array}{r}0\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}700\\ 699\end{array}}\\ \begin{array}{r}1\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}700\\ 700\end{array}}\\ \begin{array}{r}0\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}700\\ 250\end{array}}\\ \begin{array}{r}450\end{array}\end{array}$