A fraction can be written in different ways and still mean the same thing. These are called equivalent fractions.
Look at the shaded areas in this rectangle.
You can produce lots of equivalent fractions by multiplying or dividing the top and bottom by the same number.
If you are asked to fill in a missing number, remember that the top and bottom must be multiplied or divided by the same number.
What is the missing number?
Here, the bottom is multiplied by 3, so you must multiply the top by 3.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.