10000 + 2000 + 200 + 40 + 5
We get this by times each place by its place value.
For instance lets look at 12245
The 1 is in the 10000 place so we times 1 x 10000 = 10000
The 2 is in the 1000 place so we times 2 x 1000 = 2000
The next 2 is in the 100 place so we times 1 x 100 = 200
The 4 is in the 10 place so we times 4 x 10 = 40
The 5 is in the 1 place so we times 5 x 1 = 5
Now to put it in expanded form just add them like:
10000 + 2000 + 200 + 40 + 5
So the answer is 10000 + 2000 + 200 + 40 + 5
Also to check just add them and it will equal the following:
10000 + 2000 + 200 + 40 + 5 = 12245
