How many cups of flour is needed if the original cookie recipe calls for 8 cups flour but you want to make 1/3 the recipe?

In this case 8 cups of flour is needed , but since you have decided to make 1/ 3 of the recipe, you will need 1/3 of the ingredients which is 1/3 of 8 cups flour = 8/3 cups flour = 2 $\frac{2}{3}$ cups of flour.