Crossword Puzzle

123456789101112
Across
  1. 2. zero+one =
  2. 6. seven + one =
  3. 9. one+ one.
  4. 10. eight + three =
  5. 12. the addition and complete the puzzle..
Down
  1. 1. four + two =
  2. 3. five + four =
  3. 4. five + five =
  4. 5. three+ two =
  5. 7. ten + two =
  6. 8. three+ four =
  7. 11. two +two =