Math project cross word puzzle

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Across
  1. 2. The value obtained by dividing the sum of several quantities by their number; an average
  2. 6. The distance a number is from a number
  3. 8. Equal in value, amount, function, meaning, etc.
  4. 9. Substitution of a value of the variable into the variable expression and then simplifying the numerical expression that is formed
  5. 11. a tool used to rule straight lines and measure distances
  6. 12. The process used to solve a proportion
  7. 16. The value that occurs most frequently in a given set of data
  8. 21. adding a zero to a quantity does not change the value of the quantity
  9. 22. numbers and variables combined with + - / *
  10. 24. Denoting a value or quantity lying at the midpoint of a frequency distribution of observed values or quantities
Down
  1. 1. Slang term for reducing a fraction by dividing the top and bottom by the same number
  2. 3. collection of facts, such as numbers words and measurements even descriptions of things
  3. 4. numbers combined with + - / *
  4. 5. using the distributive property to rewrite an expression
  5. 7. The process of finding the value of an expression or combining like terms.
  6. 10. Finding the value of the variable that will make the statement TRUE.
  7. 11. A line with a start point but no end point
  8. 13. Calculating interest on both the original amount and previously earned interest
  9. 14. to bring or more numbers together to make a new total
  10. 15. An equation with two fractions set equal to each other
  11. 17. The comparison of two numbers.
  12. 18. A number or quantity that when multiplied with another produces a given number or expressions
  13. 19. The area of variation between upper and lower limits on an particular scale
  14. 20. Distance. How far from end to end or form one point to another
  15. 23. the amount of turn between two straight lines that have a common point