Add: 9,835 + 692 + 7,275

Explanation

We will write the numbers in vertical form so that corresponding place value columns are lined up. Then we will add the digits in each column, watching for any sums that are greater than 9. If the sum of the digits in any column is more than 9,we must carry.

\[
\begin{array}{r@{}r@{}r@{}r@{}r}
\color{blue}{} & \color{blue}{1} & \color{blue}{2} & \color{blue}{1} & \text{} \\
 & 9 & 8 & 3 & 5 \\
+ &   & 6 & 9 & 2 \\
+ & 7 & 2 & 7 & 5 \\ \hline
1 & 7 & 8 & 0 & 2 \\
\end{array}
\]
 The sum is 17,802.