Adding Fractions with Common Denominators

Find the sum.
5/9  +  2/9

• 5/9

• 2/9

• 7/9

• 7/18

Cassie made fruit punch. She mixed ²/₃ cup cherry juice, ¹/₃ cup grape juice, ²/₃ cup ginger ale, and ¹/₃ cup lime juice. Which fraction equation can be used to find the amount of punch Cassie made?

• 6 = 2 + 1 + 2 + 1

• ⁵/₃ = ¹/₃ + ¹/₃ + ¹/₃ + ¹/₃ + ¹/₃

• ⁶/₁₂ = ²/₃ + ¹/₃ + ²/₃ + ¹/₃

• ⁶/₃ = ²/₃ + ¹/₃ + ²/₃ + ¹/₃