When we write the number 5,645, the 6 is not really a 6.

As it is in the hundreds place, its value is really 600.

The abacus below shows this. 

*Notice the abacus uses units. Units is another word for ones. 

So, the number 5,645 is made up of:

5 thousands 5,000

6 hundreds 600

4 tens 40

5 ones 5

Are you ready to try some questions on this now?