Chapter 2

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Across
  1. 5. a base number raised to the power of another number.
  2. 6. ancient algorithm for finding all prime numbers
  3. 7. its factors are 1 and itself.
  4. 8. used for counting and ordering.
Down
  1. 1. numbers multiplied together to get another number.
  2. 2. the opposite of a prime number.
  3. 3. numbers without fractions.
  4. 4. used to find out if one number is a factor of another.