Mario and his friends ordered 3 pizzas. each pizza was sliced into 8 pieces. they ate 21 slices. how much pizza did they eat? write your answer as a mixed number.
well there are 8 slices in one pizza they ordered 3 pizzas so you have 8*3=24 then subtract how much pizza they ate so 24-21=3 so they ate two hole pizzas and 5 slices
