Irene R. answered 06/13/20
BS in Mechanical Engineering and Certified math teacher for 13 years
First, it is important to note that 5 cups is 4 times bigger than 1 1/4 cups.
As a result, you can determine the number of calories in 5 cups by multiplying the amount in 1 1/4 cups by 4:
125 calories x 4 = 500 calories
There would be 500 calories in 5 cups of cereal.