6th grade Q1

Dividing by $1000$ shifts the decimal point three places to the left.

A Handy Reminder:

If you're unsure about whether to shift the decimal point left or right, remember this rule: dividing by any number greater than 1 reduces the number's value. Since 1 000 is greater than 1, you move the decimal point left to divide.

Quick and Easy:

This method is simple enough to do mentally, without the need for pen and paper.

Example:

As you can see, the decimal point is moved three places to the left.