This self-checking resource about adding and subtracting fractions with non common or unlike denominators contains one google sheet activity. The activity contains 20 questions (10 adding and 10 subtracting) and will instantly provide feedback to students. Students must simplify the answer completely and when necessary it must be an improper fraction as opposed to a mixed number.

Correct answers will turn green and incorrect answers will turn red when students type in their answers which makes grading a breeze! The answer key can be hidden before you send it out to students.