Timothy need 1/2 cup of bread crumbs for a casserole and 1/3 cup of bread crumbs for the topping. How many cups of bread crumbs does Timothy need?

Step-by-step explanation:

So first you would find a common denominator. The common denominator is 6. For 1/3 you multiply both numbers by 2. For 1/2 you multiply both numbers by 3. You would then have 3/6 and 2/6. You add them together which equals 5/6. Timothy need 5/6 cups of bread crumbs for his casserole.