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Across 1. an expression written with an exponent and a base or the value of such an expression. 7. the value substituted for x in an equation. 8. the number that is used as a factor in a power. 10. the numbers that can be expressed in the form a/b, where a and b are both integers and b is not equal to 0 12. the first value in an ordered pair, which indicates the move right or left. 14. the counting numbers:1,2,3....... 19. rational numbers in decimal form that have a finite number of digits. 21. terms that contain the same variables raised to the same powers. 23. the opposite of a number, used when subtracting numbers. 25. a number multiplied by a variable. 29. the distance of a number from zero on the number line. 30. the parts of an expression to be added or subtracted. 31. rules specifying which operations in an expression should be performed. 33. the horizontal component and vertical component of a point. 34. one of two numbers whose product is 1 36. formed by the intersection of two perpendicular number lines 37. the whole numbers and their opposites:....-3,-2,-1,0,1 38. the natural numbers and zero:0,1,2,3.......

Down 2. the point of intersection of each 0 on two perpendicular number lines. 3. one of the four areas defined by the axes of the coordinate plane 4. the reciprocal of a number, used when dividing rational numbers. 5. a letter or symbol used to represent a value that can change. 6. the horizontal number line. 9. the number that tells how many times the base is used as a factor. 11. numbers which are the same distance from zero on the number line, but on opposites sides of zero. 13. a value that does not change. 15. the vertical number line. 16. the number whose positive square root is a whole number. 17. to find the value of an expression 18. numbers that cannot be expressed in the form a/b including square roots of whole numbers that are not perfect squares and nonterminating decimals that do not repeat 20. rational numbers in decimal form that have a block of one or more digits that repeats continuously. 22. perpendicular number lines 24. an expresssion that may contain only constants and operations. 26. a number which when multiplied by itself forms a product. 27. the second value in an ordered pair, which indicates the move up or down. 28. an expression that may contain variables, constants and operations. 32. the value generated for y in an equation. 35. all numbers that can be represented on the number line.