10 questions to assess student's ability to add fractions with unlike denominators.
5/12 + 1/3
2/5 + 3/7
1/6 + 3/4
1/3 + 4/18
3/5 + 1/3
3/10 + 1/6
1/2 + 4/9
2/9 + 1/3
1/2 + 2/5
1/4 + 1/6