ADDITION

Edit Answers
12345678910
Across
  1. 4. 21+3
  2. 6. 47+48
  3. 8. 13+12+11
  4. 10. 19+7
Down
  1. 1. 45+55
  2. 2. 12+1+5
  3. 3. 31+44
  4. 5. 20+15
  5. 7. 7+6
  6. 9. 9+7+4