Answer:
See below
Explanation:
So you are moving the decimal to the right, right?
This action would make the number bigger.
For this explanation I will use the example 7.2
So lets move the decimal 3 to the right.
You get 7200.
Now try dividing 7200 by 100 = 72
This did not get us the original # 7.2
Now lets divide 7200 by 1000 = 7.2
Now that we got the original #, switch the operation and multiply 7.2 by 1000
7.2 x 1000 = 7200
Answer = multiplying the number by 1,000