Across
- 2. one plus one
- 5. nineteen minus three
- 9. ten plus three
- 10. four plus one
- 11. eighteen minus four
- 12. nine plus two
- 13. thirteen plus two
- 15. one plus two
- 17. two plus eight
Down
- 1. six plus six
- 3. eight plus eleven
- 4. sixteen plus two
- 5. sixteen minus nine
- 6. five plus four
- 7. ten plus seven
- 8. ten minus four
- 14. fifteen minus eleven
- 15. seventeen plus three
- 16. twenty minus twelve
