#### Answer

$91+3623+497=4211$

#### Work Step by Step

Working left to right, add the corresponding digits in each place value.
$\ \ \ \ \ \ \ 91$
$\ \ \ 3623$
$\ \ \underline{+497}$
Add the ones position $1+3+7=11$
Carry over the digit in the tens place.
Add the tens position $9+2+9+1=21$
Carry over the digit in the tens place.
Add the hundreds position $6+4+2=12$
Carry over the digit in the tens place.
Add the thousands position $3+1=4$
Write the result of each addition step in its proper position for its place value.