Romes Puzzle

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Across
  1. 2. The four number properties
  2. 6. Keeping the "like terms"
  3. 10. Pairs of mathematical manipulations
  4. 11. Any word that can be written has a fraction
  5. 12. Set of two numbers
  6. 13. Only one solution
  7. 14. Sale or product or service
  8. 15. Numbers that include irrational/rational numbers
Down
  1. 1. When the sum is multiplied by other numbers
  2. 3. Never true
  3. 4. When the lines are coincident
  4. 5. A positive number
  5. 7. Swap each sign
  6. 8. A number without fractions
  7. 9. A real number that cannot be expressed as a ratio of integers