Kendra is making bread but the recipe she's using makes 4 loaves. She only wants to make one loaf. The changed recipe calls for 2 1/2 cups of flour and sugar combined. If the original recipe calls for 2 cups of sugar, find the amount of flour in cups in the original recipe

If the changed recipe calls for 2 1/2 cups of flour and sugar combined, and the original recipe calls for 2 cups of sugar, the difference in amounts is 2 1/2 cups - 2 cups = <<2.5-2=0.5>>0.5 cups.

Therefore, the amount of flour in cups in the original recipe is 0.5 cups. Answer: \boxed{0.5}.