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Across 1. a number that is represented by a letter or symbol 4. a fraction that has no common factors in the numerator and denomenator 8. any number that can be written as the ratio of two integers 9. the set of rational and irrational numbers 10. a comparison of two numbers by division 11. the top number in a fraction 13. the biggest number minus the smallest number 15. the set of positive numbers without the 0. 19. the set of nonnegative numbers including 0 22. a number's distance from zero 26. the process of using order of operations to combine terms 30. a(b + c) = ab + ac 33. the process of removing common factors from a numerator and denomenator to create a fraction with smaller numbers 34. word used to descrbe equality 35. a mathematical phrase that does not contain an equal sign and can only be simplified 37. a + b = b + a or ab = ba 39. word used to describe multiplication

Down 2. the set of whole numbers and their opposite 3. simplifying by replacing variables with values and following order of operations 5. a decimal number that is nonrepeating and never ends or the square root of a nonperfect square 6. numbers that are the same distance from zero 7. another name for reciprocal 12. two numbers whose product is 1. The flip of a fraction. 13. a ratio that compares two quantities 14. the process of finding a value for a variable in an equation or simplifying an expression. 16. terms or numbers that are multiplied together 17. in a set of data, the data item that shows up the most 18. the middle number in a set of ordered data 20. (a + b) + c = a + (b + c) or (ab)c = a(bc) 21. word used to describe addition 23. a decimal number with digits that do not go on forever 24. word used to describe subtraction 25. the bottom number in a fraction 27. word used to describe division 28. a mathematical sentence showing both sides have the same value. Must have an equal sign. 29. a nonterminating decimal in which a sequence of digits keep repeating . A bar is used to show what repeats. 31. a number, a variable, or the product or quotient of a number and a variable 32. a fraction whose numerator is bigger than the denominator 36. word used to describe multiplication 38. the sum of a set of numbers all divided by the number of elements in the set 40. word used to describe multiplication