Add Mixed Numbers Unlike Denominators

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

Is this a correct answer?

• Yes, the student correctly added.

• No, you cannot add unlike denominators

• No, 5 + 7 is not 12

• No, 2 + 3 is not 5

Add the mixed fractions with unlike denominators: \(3\frac{1}{2} + 2\frac{3}{8}\)

Jason is making a fruit salad. He mixes in 3 1/4 cups of orange melon and 2 2/3 cups of green melon. How many cups of melon does Jason put in the fruit salad?

• 1 1/4

• 5 3/4

• 5 11/12

• 9/12

What is the sum?

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