A recipe for chocolate chip cookies calls for 1 and one fourth1

1
4 cups of flour. If you are making 2 and one half2
1
2​recipes, how many cups of flour are​ needed?
The number of cups of flour needed to make 2 and one half2
1
2 recipes of chocolate chip cookies is ?

5/4*5/2=25/8 or 3 1/8 C flour. that is a lot of cookies.

To calculate the number of cups of flour needed to make 2 and one half (2 1/2) recipes of chocolate chip cookies, you'll need to multiply the amount of flour required for one recipe by the number of recipes.

The recipe calls for 1 and one fourth (1 1/4) cups of flour for one recipe.

First, let's convert 2 1/2 into an improper fraction:
2 1/2 = 5/2

Now, multiply the amount of flour required for one recipe by the number of recipes:
1 1/4 * 5/2

To multiply fractions, multiply the numerators (top numbers) together, and then multiply the denominators (bottom numbers) together:
(5 * 1) / (2 * 4)

Simplifying the numerator and the denominator:
5/8

The number of cups of flour needed to make 2 and one half (2 1/2) recipes of chocolate chip cookies is 5/8 cups.