When we divide numbers by 10, each digit must move one place to the right.  

When we look at the columns in a Th, H, T, O grid we notice that hundreds are 10 times smaller than thousands, tens are 10 times smaller than hundreds etc...

Example

546 ÷ 10 = 54.6 

Here is 546 in a Th, H, T, O grid.

Answer:

Each digit moves one place to the right.

So, 546 ÷ 10 = 54.6

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