Kylee bought a pack of 12 cookies one-third of the cookies are peanut butter how many of the cookies in the pack are peanut butter

One way to find the answer to this question would be to use a bar model.
Draw a long rectangle and label it, "12".
Then, cut the bar into 3 pieces.
Color in one of the boxes.
This represents the one-third of peanut butter cookies.
Since you split 12 into 3 pieces, divide 12 by 3.
You'll get the answer 4.
That means out of the 12 pack of cookies, 4 of them are peanut butter.
Hope I helped you. :)