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Across 1. on a number line, the point paired with a number 4. the set of numbers that includes positive and negative whole numbers and zero 6. the number or numbers represented by variables 9. the point on a number line labeled zero 11. where to start when an expression has grouping symbols 14. replacing each variable in a variable expression by a given value 17. on a number line, the number paired with a point 19. the positive number of any pair of opposite non-zero real numbers 24. the side of the number line to the right of the origin 25. equation that states a rule aobut relationships 26. less than or greater than 27. a grouping symbol that starts with b 28. any number, positive, negative, zero, decimals, fractions 29. any value of a variable that turns an open sentence into a true statement 30. an expression that contains a variable

Down 2. the answer to a multiplication problem 3. a symbol used to represent one or more numbers 5. formed by placing an equals sign between two numerical or variable expressions 7. the answer to a subtraction problem 8. the side of the number line to the left of the origin 10. a grouping symbol that starts with f 12. numbers in pairs such as +4 and -4 13. the set of numbers that includes zero and positive integers 15. an expression may be replaced by another expression that has the same value 16. a device used to enclose an expression that should be simplified first 18. replace a numerical expression by the simplest name for its value 20. the answer to a division problem 21. the answer to an addition problem 22. Finding the solution set 23. a grouping symbol that starts with p