This is a quiz I made to assess least common multiple as well as adding and subtracting fractions with like and unlike denominators mixed in. (DOES NOT CONTAIN ADDING/SUBTRACTING MIXED NUMBERS).
*Answer Key is included!*
CCSS.Math.Content.5.NF.A.1 Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)