Arrange the numbers vertically and add:
Step 1: Add the ones
Given sum:
First add ones ,
Write under ones column.
Step 2: Add the tens
Next add tens ,
Write under tens column and carry to hundreds column.
Step 3: Add the hundreds
Next add hundreds , (Extra is carry from tens)
Write under hundreds column and carry to thousands column.
Step 4: Add the thousands
And finally add thousand (Extra is carry from hundreds)
Write under thousand column.
So we get,