JP's Crossword puzzle

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Across
  1. 2. includes whole numbers and negative whole numbers
  2. 4. the rate of travel of an object, along with its direction
  3. 9. a symbol for an unknown value in a equation
  4. 10. A number that has more than 0
  5. 12. a sentence with two numbers and one math operation
  6. 13. A number that is less than 0
  7. 14. a special ratio in which the two terms are in different units.
  8. 15. The rate of change of position of an object in any direction
Down
  1. 1. the measurement of how far away something is
  2. 3. a number is 1 divided by that number
  3. 5. making something bigger in quantity or size
  4. 6. distance or quantity
  5. 7. making something smaller in quantity or size
  6. 8. if 3 is a positive and -3 is negative, 3 is the _______ of -3
  7. 11. a measurement of how hot or cold something is.