Question

add.
1
9 7
+ 1,8 6 9
overline{square,squaresquaresquare}

Explanation:

Step1: Align digits by place value

$$\begin{align} &\phantom{+1,}1\\ &\phantom{+1}97\\ +&1,869\\ \hline \end{align}$$

Step2: Add ones place digits

$1 + 7 + 9 = 17$. Write 7, carryover 1.

Step3: Add tens place digits

$1 + 9 + 6 = 16$. Write 6, carryover 1.

Step4: Add hundreds place digits

$1 + 0 + 8 = 9$. Write 9.

Step5: Add thousands place digit

Write 1 (from 1,869).

Step6: Combine all digits

Result: $1,967$

Answer:

1,967