1. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Absolute value How far a number is from zero

2. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. algebra An area of mathematics where letters represent unknown numbers

3. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. algebraic equation A math sentence with variables, numbers, at least one operation, and an equal sign.

4. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. annual Something that happens once a year

5. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. associative In addition and subtraction, no matter how the numbers are grouped, the answer will always be the same.

6. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. bill A written statement of how much money is owed for items purchased or services provided Sample cell phone bill:

7. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. box-and-whisker plot A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values. a box is drawn around the quartile values and whiskers extend from each quartile to the extreme data points. Tree Heights (measured in feet)

8. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. center The middle. Such as the center of a circle or square Center of a circle

9. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Circumference The distance around a circle; the perimeter of a circle

10. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. common factor A whole number that divides exactly into two (or more) other numbers

11. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. compute To solve problems that use numbers Example of compute:

12. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. constant A quantity having a fixed value that does not change or vary, such as a number

13. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. cubic centimeter A unit of volume that is made by a cube that is 1 centimeter on each side. (Not actual size)

14. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. cubic feet A unit of volume that is made by a cube that is 1 foot on each side

15. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. cubic meter A unit of volume that is made by a cube that is 1 meter on each side (Not actual size)

16. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. cubic millimeter A unit of volume that is made by a cube that is 1 millimeter on each side 1 millimeter (Not actual size)

17. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. cubic yard A unit of volume that is made by a cube that is 1 yard on each side 1 yard (Not actual size)

18. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Diameter a chord that includes the center of a circle

19. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. dimension A measure in one direction (e.g., length, width, height, or depth.) Length= 6 in. Width= 3 in. (Not actual size)

20. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. distributive The same product results in multiplication when performed on a set of numbers as when performed on members of the set individually.

21. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. enlargement The process of making something larger Original Enlargement

22. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. equilateral Describes a geometric figure in which all the sides are of equal length This geometric figure’s sides are equal lengths so it is equilateral

23. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. experimental probability The ratio of the number of times an event occurs to the total number of trials or times the activity is performed

24. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. expression Numbers, symbols grouped together to show the value of something

25. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. heaviest The most heavy; of great weight, hard to lift or carry

26. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. inequality a statement that contains one of the following signs placed between two expressions:, k, l, Example inequality:

27. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. interest Money paid for the use of other money. Sam’s dad loaned him $50 so he could buy a new video game. Sam’s dad said that because he was loaning Sam the money, Sam needed to pay interest of $5. This means that Sam must pay his dad back $55, that includes the loan of $50 plus the interest of $5.

28. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Inverse operation The operation that reverses the effect of another operation Example: you can use addition facts to do subtraction

29. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Inverse variation A relationship between two variables in which the product is a constant. When one variable increases the other decreases in proportion so that the product is unchanged. donuts y=3 donuts

30. Mathematics Vocabulary - Grade 7 Isosceles triangle ©Partners for Learning, Inc. a triangle with 2 equal sides and 2 equal angles

31. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. lightest Weighing the least

32. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. longer Having greater length 2 in 8 in

33. Mathematics Vocabulary - Grade 7 Mean ©Partners for Learning, Inc. Average 62, 74, 74, 75, 82, 86, 87, 88, 90, 92, 93, 94, 94, 99 Math Test Scores: Mean (average) of the Math Test Scores: 85

34. Mathematics Vocabulary - Grade 7 Measures of central tendency ©Partners for Learning, Inc. Measure that tells us where the middle of a bunch of data lies. The three most common are mean, median, and mode.

35. Mathematics Vocabulary - Grade 7 Median ©Partners for Learning, Inc. The middle value of a set of data that are arranged in order of size. 62, 74, 74, 75, 82, 86, 87, 88, 90, 92, 93, 94, 99 Math Test Scores: The median of the test scores is 87.

36. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. midpoint The middle of; the point halfway along The midpoint of this line

37. Mathematics Vocabulary - Grade 7 Mode ©Partners for Learning, Inc. The number or numbers that occur most often in a set of data 62, 74, 74, 75, 82, 86, 87, 88, 90, 92, 93, 94, 99 Math Test Scores: The mode of the test scores is 74.

38. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. ninth Number 9 in a sequence, also can refer to nine equal parts

39. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. outcome One of the possible results of a probability experiment Landing on heads is a possible outcome when flipping a coin

40. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. partial product A product formed by multiplying the multiplicand by one digit of the multiplier when the multiplier has more than one digit.

41. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Perimeter Distance around the outside of a shape

42. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Pi The ratio of a circle's circumference to its diameter This symbol represents Pi

43. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. positive linear relationship A statistical term used to describe the positive relationship between a variable and a constant

44. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. predict To say what will happen Based on the pattern shown in this chart, we can predict that in week 5, the plants will measure 7 inches.

45. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. prime factorization The expression of a number as the product of prime factors.

46. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Probability How likely it is for an event to happen.

47. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Proportion A part to whole comparison the equality of two ratios written as an equation

48. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Proportional When two quantities always have the same relative size

49. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. quadrant Any of the four regions formed by the axes in a rectangular coordinate system.

50. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Radius a line segment with one endpoint at the center of a circle and its other endpoint on the circle Radius

51. Mathematics Vocabulary - Grade 7 Range ©Partners for Learning, Inc. The difference between the greatest (maximum) and least (minimum) values in a set of data. 62, 74, 74, 75, 82, 86, 87, 88, 90, 92, 93, 94, 99 Math Test Scores: The range of math test scores is 37.

52. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Rate A ratio that compares quantities measured in different units

53. Mathematics Vocabulary - Grade 7 Ratio ©Partners for Learning, Inc. a comparison of two numbers, often written as a fraction 5 out of 6 students ride the bus to school Ratio:

54. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. real number The type of number we normally use

55. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. rectangular shape A three-dimensional figure (polyhedron) with congruent rectangular parallel bases and lateral faces that are parallelograms.

56. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. reflexive The property that a = a

57. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Scale Sequenced marks, usually at regular intervals or representing equal steps The measurements on a ruler are a scale

58. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Scale drawing (or model) A drawing (or model) that uses proportional lengths in the drawing (or model) and the actual image. Real Horse 36 in. Model Horse 3 in. Scale= 1:12

59. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. scalene triangle a triangle that has sides of different lengths and three different angles

60. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. scatter plot A graph of plotted points that show the relationship between two sets of data.

61. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. shorter Having less length, distance, or height The orange line is shorter than the blue line

62. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Similar figures Figures are similar if the have the same shape, but are different sizes These triangles are similar figures because they have the same shape but are different sizes

63. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Slope The ratio of change in the vertical axis (y-axis) to change in the horizontal axis (x-axis) in the form rise or Dy. Also, the constant, m, in the linear equation for the slope-intercept form 3 -4

64. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. square meter A unit of area, equal to the area of a square with sides of one meter 1 meter (This is not the actual size of a square meter) 1 meter 2 1 meter

65. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Square Numbers Numbers that are the products of multiplying a number with itself

66. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. standard form Ax + By = C, where A > 0 and, if possible, A, B, and C are relatively prime integers. Sample: The standard form for an equation of a line

67. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. stem and leaf plot A simple way to display the shape of a distribution.

68. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. substitution Means putting numbers where the letters are

69. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Surface area of a geometric solid The sum of the areas of the faces and any curved surfaces of the figure that create a geometric solid figure. Sample:

70. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. survey A method of collecting a sample data by asking people questions

71. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. ten million 10,000,000

72. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. ten thousandth one part in ten thousand equal parts

73. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. theoretical probability the probability of an event when all outcomes are equally likely

74. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. thousandths one of 1,000 equal parts of a whole

75. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. transitive describes a given relation between terms

76. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. twice Two times

77. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. x-intercept A point at which a graph intersects the x-axis.

78. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. y-intercept The value of y at the point where a line or graph intersects the y-axis. The value of x is zero (0) at this point.