Cory bought 5 pounds of cheese at the grocery store. He used 1 ¼ pounds for sandwiches and 1 ½ pounds when he made some pizzas. How much cheese does Cory have left?
5 - 1 1/4 - 1 1/2 =
20/4 - 5/4 - 6/4 = (20-5-6)/4 = 9/4 = 2 1/4 lb