Grandad's number crossword

123456789101112
Across
  1. 3. Five takeaway two. (5)
  2. 4. Half of ten. (4)
  3. 5. Ten lots of ten. (3,7)
  4. 6. Five tens. (5)
  5. 9. Add five to ten. (7)
  6. 10. Ten plus two. (6)
  7. 11. Two lots of three or three lots of two. (3)
  8. 12. Three threes. (9)
Down
  1. 1. The smallest whole number. (3)
  2. 2. Ten minus three. (5)
  3. 3. Two tens.(6)
  4. 4. Eight take away four. (4)
  5. 7. Five more than twenty. (6,4)
  6. 8. Five plus three. (6)