Tom has some baseball cards and football cards. He had four times as many football cards than baseball cards. He has 12 football cards. How many baseball cards does Tom have?

12/4 = ?

Three

To find out the number of baseball cards Tom has, we can set up an equation based on the given information. Let's say the number of baseball cards is represented by B.

Since Tom has four times as many football cards as baseball cards, the number of football cards can be represented as 4B.

We know that Tom has 12 football cards. So, we can equate it with our equation: 4B = 12.

Now we can solve for B to find the number of baseball cards:

Divide both sides of the equation by 4:
4B/4 = 12/4

Simplifying the equation, we have:
B = 3

Therefore, Tom has 3 baseball cards.