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MATH VOCABULARY

MATH VOCABULARY. Intermediate. Acute Angle. An angle that measures less than a right angle (90°). addend. Any of the numbers that are added Example : 2 + 3 = 5 The addends are 2 and 3. A.M. The time between midnight and noon. Angle.

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MATH VOCABULARY

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  1. MATH VOCABULARY Intermediate

  2. Acute Angle An angle that measures less than a right angle (90°).

  3. addend Any of the numbers that are added Example: 2 + 3 = 5 The addends are 2 and 3.

  4. A.M. The time between midnight and noon

  5. Angle A figure formed by two rays that meet at a common endpoint

  6. Area The number of square units needed to cover a given surface.

  7. Array An arrangement that shows objects in rows and columns

  8. Bar Graph A way to show information that uses bars to stand for data

  9. Benchmark Numbers like 10, 25, 50, or 100 that are used to help make estimates

  10. Calendar A table that shows the days, weeks, and months of a year in order

  11. Capacity The amount a container can hold when filled

  12. Cell Any single box in a table

  13. Circle Graph A graph in the shape of a circle that shows data as a whole made up of different parts

  14. Closed Figures A shape that begins and ends at the same point

  15. Cone A solid, pointed figure that has a flat, round base

  16. Congruent Figures that have the same size and shape These triangles are congruent.

  17. Cube A solid figure with six congruentsquarefaces

  18. Cumulative Frequency A column in a table that keeps a running total in a frequency table

  19. Cup A customary unit used to measure capacity 2 cups = 1 pint

  20. Cylinder A solid figure that is shaped like a can

  21. Decimal A number that uses place value and a decimal point to show values less than one, such as tenths and hundredths 3.47

  22. Decimal point A period used in decimal numbers to separate the whole number part from the decimal part

  23. Degree A unit of measure used to measure parts of a circle. There are 360° in a circle.

  24. Degree Celsius A standard unit for measuring temperature in the metric system

  25. Degrees Fahrenheit A standard unit for measuring temperature in the customary system

  26. Denominator The number below the bar in a fraction. It tells the total number of equal parts.

  27. Diameter A line segment that passes through the center of a circle and has its endpoints on the circle

  28. Difference The answer in a subtraction problem 8 - 5 = 3 3 is the difference.

  29. Dividend The number that is being divided in a division problem 35 ÷ 5 = 7                  The dividend is 35.

  30. Divisor The number that divides the dividend 18 ÷ 3 = 6                  The divisor is 3.

  31. Double bar graph A graph using bars to compare similar kinds of data

  32. Elapsed time The time that passes from the start of an activity to the end of that activity The elapsed time is one hour.

  33. Equally likely When the outcomes of an experiment have the same chance of happening You are equally likely to roll 1, 2, 3, 4, 5, or 6.

  34. Equilateral triangle A triangle with all sides congruent

  35. Equivalent decimals Two or more decimals that name the same amount 0.3 and 0.30 name the same amount.

  36. Equivalent fractions Two or more fractions that name the same amount

  37. Expanded form A way to write numbers by showing the value of each digit 635 = 600 + 30 + 5 1,479 = 1,000 + 400 + 70 + 9

  38. Expression A part of a number sentence that combines numbers and operation signs (12 – 4) – 3

  39. Fact family A set of related addition and subtraction or multiplication and division number sentences 2 + 4 = 6       6 - 4 = 24 + 2 = 6       6 - 2 = 4 or 3 X 6 = 18       18 ÷ 6 = 36 X 3 = 18       18 ÷ 3 = 6

  40. Factor A number that is multiplied by another number to find a product. The factors are 4 and 7.

  41. Factor tree A diagram that shows the primefactors of a composite number

  42. Fraction A number that names part of a whole or part of a group

  43. Frequency table A table that organizes the total for each category or group

  44. Gallon A customary unit used to measure capacity 4 quarts = 1 gallon

  45. Grouping property of addition The property which states that the way addends are grouped does not change the sum (5 + 9) + 3 = 5 + (9 + 3) 14 + 3 = 5 + 12 17 = 17

  46. Grouping property of multiplication The property which states that the way factors are grouped does not change the product (2 X 3) X 4 = 2 X (3 X 4) 6 X 4 = 2 X 12 24 = 24

  47. Hexagon A polygon with 6 sides and 6 angles

  48. Horizontal The direction from left to right

  49. Hundredth One of one hundred equal parts

  50. Impossible Something that will never happen Example: A dinosaur will walk into your classroom today.

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