Задание
Найти сумму:
| \(\displaystyle +\) | \(\displaystyle 1\) | \(\displaystyle 1\) | \(\displaystyle 3\) |
| \(\displaystyle 1\) | \(\displaystyle 3\) | \(\displaystyle 5\) | |
Решение
1. Складываем единицы: \(\displaystyle 3+5=8.\)
| \(\displaystyle +\) | \(\displaystyle 1\) | \(\displaystyle 1\) | \(\displaystyle \color{red}{3}\) |
| \(\displaystyle 1\) | \(\displaystyle 3\) | \(\displaystyle \color{red}{5}\) | |
| \(\displaystyle ?\) | \(\displaystyle ?\) | \(\displaystyle \color{red}{\bf8}\) |
2. Складываем десятки: \(\displaystyle 1+3=4.\)
| \(\displaystyle +\) | \(\displaystyle 1\) | \(\displaystyle \color{red}{1}\) | \(\displaystyle 3\) |
| \(\displaystyle 1\) | \(\displaystyle \color{red}{3}\) | \(\displaystyle 5\) | |
| \(\displaystyle ?\) | \(\displaystyle \color{red}{\bf4}\) | \(\displaystyle 8\) |
3. Складываем сотни: \(\displaystyle 1+1=2.\)
| \(\displaystyle +\) | \(\displaystyle \color{red}{1}\) | \(\displaystyle 1\) | \(\displaystyle 3\) |
| \(\displaystyle \color{red}{1}\) | \(\displaystyle 3\) | \(\displaystyle 5\) | |
| \(\displaystyle \color{red}{\bf2}\) | \(\displaystyle 4\) | \(\displaystyle 8\) |
Ответ: \(\displaystyle 113+135=248.\)