This page looks for a rapid response from children to show that they clearly understand what is happening when numbers become 10 times or 100 times smaller.
The process is simple: to divide by 10 move each digit one place to the right. To divide by 100 move each digit 2 places to the right.
All the numbers are multiples of 10 so there is no need to get involved with decimal points, but some children might ask what happens to the zero. For example 500 divided by 10: move each digit one place to the right gives 50.0; this is correct but it can be written as 50.