500 − 300 = 200
800 − 400 = 400
400 − 40 = 360
418 − 18 = 400
275 − 5 = 270
300 − 7 = 293
570 − 60 = 510
630 − 600 = 30
355 − 300 = 55
В даных примерах разность является двузначным числом​:
630 − 600 = 30
355 − 300 = 55
Вычисления:
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}500\\ 300\end{array}}\\ \begin{array}{r}200\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}800\\ 400\end{array}}\\ \begin{array}{r}400\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}400\\ 40\end{array}}\\ \begin{array}{r}360\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}418\\ 18\end{array}}\\ \begin{array}{r}400\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}275\\ 5\end{array}}\\ \begin{array}{r}270\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}300\\ 7\end{array}}\\ \begin{array}{r}293\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}570\\ 60\end{array}}\\ \begin{array}{r}510\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}630\\ 600\end{array}}\\ \begin{array}{r}30\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}355\\ 300\end{array}}\\ \begin{array}{r}55\end{array}\end{array}$