Question

A recipe calls for 4 1/2 cups of flour. If you have already used 2 3/4 cups, how much more flour do you need?

Answer 1

To find out how much more flour is needed, subtract the amount of flour already used from the amount called for in the recipe.

So, 4 1/2 cups - 2 3/4 cups = <<(4-2)-(1/4-3/4)=1 3/4>>1 3/4 cups. Answer: \boxed{1\frac{3}{4}} \text{ cups}.