Subtracting hundreds such as (800 - 200 = 600) is like subtracting quantities of other items. In this case 2 hundreds are subtracted from 8 hundreds to leave 6 hundreds. This would be similar to 2 oranges being subtracted from 8 oranges to leave 6 oranges.

Each digit of a number in our number system has a different place value (ones, tens, hundreds, etc.). Always subtract within the same place value column when subtracting numbers.