#### Answer

$11,016$

#### Work Step by Step

$1708 + 321 + 61 + 8926$
Start at the right of each number and add the ones digits
$8 + 1 + 1 + 6 = 16$ ones
Regroup the $16$ ones as $1$ ten and $6$ ones
Write the $6$ ones in the ones column.
Write the $1$ ten in the tens column
Add the tens column next including the regrouped $1$
$1 + 0 + 2 +6 + 2 = 11$ tens
Regroup the $11$ tens as $1$ hundred and $1$ ten
Write the $1$ ten in the tens column.
Write the $1$ hundred in the hundreds column
Add the hundreds column next including the regrouped $1$
$1 + 7 + 3 + 9 = 20$ hundreds
Regroup the $20$ hundreds as $2$ thousands and $0$ hundreds
Write the $0$ hundreds in the hundreds column
Write the $2$ thousands in the thousands column
Add the thousands column next including the regrouped $2$
$2 + 1 + 8 = 11$ thousands
Regroup the $11$ thousands as $1$ ten-thousand and $1$ thousand
Write the $1$ in the thousands column and the $1$ in the ten-thousands column
Add the ten-thousands column next which is the regrouped $1$
Write the $1$ in the ten-thousands column.
$11016$
Separate each group of three digits with a comma.
$11,016$