Adding Fractions with Common Denominators

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Across
  1. 2. 2/12+6/12
  2. 4. 1/5+3/15
  3. 6. 1/8+5/8
  4. 7. 8/15+4/15
  5. 8. 5/8+2/8
  6. 9. 4/9+1/9
Down
  1. 1. 1/4+1/4
  2. 3. 2/4+1/4
  3. 4. 2/10+6/10
  4. 5. 3/7+2/7
  5. 6. 2/8+1/8
  6. 7. 3/9+1/9