Addition Practice

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Across
  1. 4. 27 + 57
  2. 5. 18 + 35
  3. 7. 21 + 39
  4. 8. 68 + 29
  5. 9. 67 + 23
  6. 10. 46 + 24
  7. 12. 45 + 20
  8. 13. 18 + 22
Down
  1. 1. 42 + 38
  2. 2. 47 + 28
  3. 3. 33 + 17
  4. 6. 51 + 25
  5. 9. 12 + 7
  6. 11. 25 + 5
  7. 12. 51 + 11