Maths

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Across
  1. 4. two plus four plus five
  2. 5. eight minus seven
  3. 7. no longer a teenager!
  4. 9. Hugo's age at next birthday
  5. 11. years in a century
Down
  1. 1. three squared
  2. 2. nothing at all!
  3. 3. Grandpa's age
  4. 6. two squared
  5. 8. also known as a dozen
  6. 9. how many toes do you have?
  7. 10. two times four