Math Crossword

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Across
  1. 3. The set of numbers 1,2,3,4....also called counting numbers
  2. 5. An equation that is true for every value of the variable
  3. 7. Two numbers whose product is 1
  4. 8. The set of numbers that include rational and irrational numbers
  5. 10. The difference between the highest and lowest sources in a set of data
  6. 13. A number that had no factor but itself and 1
  7. 14. A statement that solves a problem or explains how to solve the problem
  8. 15. A statement that compares two quantities using <, >,≥, ≤, or ≠
  9. 16. An average of N numbers computed by adding some function of the numbers and dividing by some function of N
  10. 18. A quantity that does not vary
  11. 19. To write an expression in a simpler form
  12. 20. The number that occurs most often in a set of data
Down
  1. 1. A number, a variable, or the product of a number and a variable
  2. 2. Whole numbers and their opposites
  3. 4. The middle number in a set of numbers that are listed in order
  4. 6. A ratio that compares two quantities measured in different units
  5. 9. A mathematical sentence with an equal sign
  6. 11. Numbers that cannot be expressed in the form a/b, where a and b are integers and b=0
  7. 12. A mathematical phrase that contains operations, numbers, and/or variables
  8. 17. A symbol (Like x or y) that is used in a mathematical or logical expressions to represent a variable quantity