Katie buys a bag of mixed buttons. In the bag there are 15 buttons, in which 80% of them are small buttons. How many small buttons did Katie have?

There are 12 small buttons.

Step-by-step explanation:

If you calculate the percent of small buttons from the total amount, you will come up with 12 small buttons. However, if you were calculating the other 20% of buttons, you would get an answer of 3 large buttons which is just extra steps to find your answer. Hope this helps :)