Basic College Mathematics (10th Edition)

$6391$
$3814$ + $2317$ Start at the right of each number and add the ones digits $4$ + $7$ = $11$ ones Regroup $11$ ones as 1 ten and 1 one Write the 1 one in the ones column and write 1 ten in the tens column. Add the tens digits next including the regrouped 1. $1 + 7 + 1 = 9$ Write the 9 tens in the tens column Add the hundreds digits next. $5 + 8 = 13$ hundreds Regroup $13$ hundreds as 1 thousand and 3 hundreds Write the 3 hundreds in the hundreds column. Write the 1 thousand in the thousands column. Add the thousands digits next including the regrouped 1. $1 + 3 + 2= 6$. Write the 6 thousand in the thousands column. The sum of the two numbers is $6391.$ You can also add vertically for easier addition.