Addition and Subtraction (Number 11-20)

12345678910
Across
  1. 4. minus eight = ten
  2. 6. plus eight = eighteen
  3. 8. minus five = eleven
  4. 9. minus seven = ten
  5. 10. plus four = eighteen
Down
  1. 1. minus four = sixteen
  2. 2. plus two = seventeen
  3. 3. plus six = nineteen
  4. 5. minus nine = ten
  5. 7. plus six = sixteen