Equivalent Fractions, Sum of Unit Fractions, Mixed Numbers

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 fractions. Simplify if needed.

Add the fractions. Simplify if needed.

• 1

• 2

Add the fractions. Simplify if needed.

• 1

• 60

• 30

• 24

• 120

Add the mixed numbers vertically. Simplify if needed.

Add the mixed numbers vertically. Simplify if needed.