Hello,
You said that each loaf of bread requires 2 1/2 cups of flour so I would say you're going to need about 10 cups of flour to make 4 loafs of bread. Think of it this way...
2 1/2 plus another half is what? 3 right? Add 2 more and you have 5 cups. 5+5=10
Hope that helps!...

Always remember the simple rule of P.E.M.D.A.S. Known as the order of operations.
If you use this method start from the left to the right...
Parenthesis | Exponents | Multiplication | Division | Addition | Subtraction
An easy way to remember it is "(P)lease (e)xcuse (m)y (d)ear...

Always remember the simple rule of P.E.M.D.A.S. Known as the order of operations.
If you use this method start from the left to the right...
Parenthesis | Exponents | Multiplication | Division | Addition | Subtraction
An easy way to remember it is "(P)lease (e)xcuse (m)y (d)ear...