Question

Stanley ordered a pizza that was cut into eight pieces. If he ate 3/7 of the pizza, how much was left?


So far the only thing I can think of is multiplying 3/7 by 8
Ms. Sue
Yes, you're right.
PsyDAG
If the pizza is cut into eight pieces, how could he eat 3/7? Did he part of one piece?

1 - 3/7 = 7/7 - 3/7 = ?