Question

A recipe calls for 3/4 cup of flour, but Kelli has only 1/3 cup of flour. How much more flour does she need?

Answer 1

she needs 3/4 - 1/3   cups

LCD of 3 and 4 is 12 so convert the fractions to 12th's:-

3/4 - 1/3  = 9/12 - 4/12  = 5/12

She needs another 5/12 of a cup of flour , Answer.