We learned rounding numbers. Rounding numbers is like 562 475.567 if we were rounding this number to the tens it would be 562 480.000, if you were rounding to the tenths it would be 562 475 .6 and so on .

We also learned power of ten here is a chart
1 10
2 100
3 1000
4 10 000                         10 cubed is 1000
5 100 000              
6 1 000 000
and so on.