real number systems

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123456789101112131415
Across
  1. 3. a positive integer
  2. 5. a number less than zero
  3. 8. a number that when squared gives a negative result
  4. 9. a non-negative integer
  5. 10. the integer that is neither positive nor negative
  6. 11. a number greater than zero
  7. 12. the multiplicative inverse of a number
  8. 13. the distance of a number from zero on the number line
  9. 14. a number that includes a real and an imaginary part
  10. 15. an irrational number approximately equal to 2.71828
Down
  1. 1. root a number that when multiplied by itself gives the original number
  2. 2. a number that can be expressed as a fraction
  3. 4. any number that can be found on the number line
  4. 6. a whole number, positive or negative
  5. 7. an irrational number approximately equal to 3.14159
  6. 8. a number that cannot be expressed as a fraction