Math Crossword Puzzle

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Across
  1. 3. A string of numbers with an answer.
  2. 7. Numbers that are smaller than 0.
  3. 9. The amount of a number.
  4. 10. A string of numbers with no answer.
  5. 11. Tax When the price you are paying goes up due to taxes
  6. 12. The number in the middle of a set of numbers.
  7. 14. A shape with 3 sides.
Down
  1. 1. Numbers that are larger than 0.
  2. 2. The number that accrues most often in a set of numbers.
  3. 4. Value The exact distance from 0.
  4. 5. The number that is next to a variable.
  5. 6. When a price is brought down.
  6. 8. The amount of space in a 3D shape.
  7. 12. The average of a set of numbers.
  8. 13. The amount of space in a 2D shape.