John Napier

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Across
  1. 2. Meaning "reckoning numbers," is Napier's work of theories and tables.
  2. 3. John Napier's ancestral home
  3. 4. Another way to write his last name,Napier.
  4. 7. An invention of Napier that made it easier to represent fractions and other numbers.
  5. 9. A bug that is said to be always carried by Napier
Down
  1. 1. John Napier's nickname.
  2. 5. City where Napier was born.
  3. 6. In Scotland, a person who owns a large real estate.
  4. 8. A manually-operated, mathematical tool used to find the product and quotient of numbers.
  5. 10. The surname of John Napier's wife.