MATH PUZZLE

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Across
  1. 3. An ordinal number is a number that tells the position of something in a list.
  2. 5. Its symbol is Z-
  3. 7. Its symbol is Z+
  4. 11. …........................... include multiplier.
  5. 13. he was the first mathematician writing a book about Algebra and he used 0 for zero at the first time.
  6. 14. …................. is the symbol of subtrction.
Down
  1. 1. Determine the place value of 7 in 3752.
  2. 2. Numbers that can only be divided by itself and one are called.
  3. 3. Numbers that are not divisible by two are called.
  4. 4. Its symbol is the "=" sign.
  5. 5. {0,1,2,3,4,5,6,7,8,9,} are elements of the set of .....................
  6. 6. Numbers that are a multiple of two are called.
  7. 8. What is 54 in operation "36+18=54".
  8. 9. He founded Fibbonacci numbers.
  9. 10. fifty-six …................. by four the result is sixteen.
  10. 12. plus is the symbol of ....................