\( \begin{array}{r}\text { 3a) } 798-562 \\ 798 \\ -\quad 562 \\ \hline\end{array} \)

To solve \(798 - 562\), let's break it down step by step. Start by subtracting the units: \(8 - 2 = 6\). Now move to the tens: \(9 - 6 = 3\). Finally, handle the hundreds: \(7 - 5 = 2\). Putting it all together, we find that \(798 - 562 = 236\). Now let's express it visually to clarify: If you visualize this as taking away 562 from 798, you're left with 236, which is a neat number! Remember, sometimes a quick check can be handy: You can add your answer back to 562 (236 + 562 = 798) to ensure accuracy!