700 − 231 = 469
252 − 126 = 126 − в даном примере разность равна вычитаемому.
900 − 308 = 592
200 − 63 = 137
401 − 86 = 315
605 − 197 = 408
Вычисления:
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}700\\ 231\end{array}}\\ \begin{array}{r}469\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}252\\ 126\end{array}}\\ \begin{array}{r}126\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}900\\ 308\end{array}}\\ \begin{array}{r}592\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}200\\ 63\end{array}}\\ \begin{array}{r}137\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}401\\ 86\end{array}}\\ \begin{array}{r}315\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}605\\ 197\end{array}}\\ \begin{array}{r}408\end{array}\end{array}$