Question

Mary is making a birthday cake to surprise her mom. She needs 3 1/2 cups of flour, but she only has 1/3 cup. How much more flour does she need?

Answer 1

3 1/6 cups more

Explanation:

Answer 2

3 1/2 = 7/2 (write as a mixed number)

7/2 - 1/3 = ?( you need more flour, so subtract what you have from what you need. to subtract you need to find the least common denominator)

21/6 - 2/6

19/6 cups of flour is what you need.

or 3 1/6 cup if it needs to be converted back into a mixed fraction

Explanation: