A family bought 1 box of pizza that is cut into 16 slices. Only three-fourths of the pizza was eaten by the family. How many slices of pizza were left? Let's think first. Chain of thought:
The family ate 16 x 3 / 4 = 12 slices. So, there were 16 - 12 = 4 slices of pizza left.
Therefore, the answer is 4.