Adding 1000: Adding to Numbers More than 1000

When we add 1000 to a 4-digit number, we must increase the digit in the Thousands column by 1.

Here is the number 1623 shown on a Thousands Hundreds Tens Ones abacus.

*Notice that the abacus says units. Units are another word for ones. 

When we add 1000 we add an extra number to the Thousands column.

1623 + 1000 = 2623

Example

Add 1000 to:

5028

Answer

We increase the 5 in the Thousands column by 1 to get 6 in that column.

5028 + 1000 = 6028