If a pizza is cut into 8 equal slices and 3 slices are eaten, what fraction of the pizza is left?

To determine what fraction of the pizza is left after 3 out of 8 slices have been eaten, start by recognizing that the total number of slices is 8. If 3 slices are consumed, you can calculate the number of slices that remain by subtracting the eaten slices from the total slices:

8 total slices - 3 eaten slices = 5 remaining slices.

Next, since the remaining portion is being expressed as a fraction of the whole pizza, the number of remaining slices (5) is placed over the total number of slices (8):

Remaining fraction = 5 remaining slices / 8 total slices = 5/8.

Thus, the fraction of the pizza that is left after 3 slices have been eaten is 5/8, confirming that this is the correct answer.