Question

Ken needs 4 1/2 of flour to make cookies. He already put in 2 1/3 cups of flour. How much more flour does he need to make cookies?

Answer 1

Answer: 2 1/6

Explanation:

Rewriting our equation with parts separated

Solving the whole number parts

Solving the fraction parts

Find the LCD of 1/2 and 1/3 and rewrite to solve with the equivalent fractions.

LCD = 6

Combining the whole and fraction parts

Solution by Formulas

First:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

Applying the fractions formula for subtraction,

Simplifying 13/6, the answer we get is

2 1/6

Hope this helped!