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Math 6 Vocabulary
6th grade math vocabulary
| Term | Definition |
|---|---|
| Integer | Set of whole numbers and their opposites. No fractions or decimals. Includes: • the counting numbers {1, 2, 3, ...}, • zero {0}, • and the negative of the counting numbers {-1, -2, -3, ...} |
| Whole number | Zero and positive numbers with no fractional or decimal part. {0,1,2,3,4,5...} |
| Opposite Numbers | Numbers that have the same magnitude but are on opposite sides of zero on the number line Opposites have the same absolute value. |
| Absolute Value | The distance a number is from zero on the number line. |
| Number Line | A line on which numbers are marked at intervals, used to illustrate simple numerical operations. A number line can be horizontal or vertical. |
| Origin | Zero on a number line. |
| Horizontal | In a side-to-side direction. |
| Vertical | In an up-down direction or position. Upright. Example: trees grow in a vertical direction. |
| Sum | The answer to an addition problem. |
| Difference | The answer to a subtraction problem. |
| Product | The answer to a multiplication problem. |
| Quotient | The answer to a division problem. |
| Positive | A magnitude or value greater than zero. |
| Negative | A magnitude or value less than zero. |
| Zero Pair | A number together with its opposite result in zero. |
| Magnitude | Value, size |
| Additive Inverse | What you add to a number to get zero. The negative of a number. |
| Coordinate Plane | The plane containing a horizontal number line, the "x" axis and a vertical number line, the "y" axis. |
| Coordinates | A set of values that show an exact position. On graphs it is usually a pair of numbers: the first number shows the distance along, and the second number shows the distance up or down. |
| Ordered Pair | A pair of numbers used to show the position on a graph, where the "x" (horizontal) value is first, and the "y" (vertical) value is second. Usually written in parentheses like this: (12,5) |
| Quadrant | Any of the 4 areas made when we divide up a plane by an x and y axis. They are usually numbered I, II, III and IV |
| Circumference | The distance around a circle. |
| Diameter | Any line segment from one point on a circle going through the center of the circle to another point on the circle. |
| Chord | Any line segment starting from one point on a circle to another point on the circle. |
| Radius | Any line segment from the center of a circle to a point on the circle. |
| Symmetry | When two or more parts are identical after a flip, slide or turn. |
| Congruent | Figures that are the same shape and size |
| Similar | Figures that are the same shape but not necessarily the same size. |
| Triangle | A 3-sided polygon with straight sides. |
| Polygon | A closed plane figure formed by three or more line segments meeting at points called vertices. |
| Quadrilateral | A polygon with 4 sides, 4 vertices and 4 angles. |
| Parallelogram | A quadrilateral with 2 pairs of congruent parallel sides |
| Acute angle | An angle that is less than 90 degrees. |
| Obtuse Angle | An angle that is more than 90 degrees. |
| Right Angle | An angle that measures exactly 90 degrees. |
| Isosceles Triangle | A triangle with two congruent sides and angles. |
| Equilateral Triangle | A triangle with all three congruent sides and angles. |
| Scalene Triangle | A triangle with no congruent sides or angles. |
| Regular Polygon | A polygon with all interior angles and all sides congruent. |
| Ratio | A comparison of two or more quantities. Can be written as a:b, a to b, or a/b. |
| Fraction Bar | The line that separates the numerator and the denominator in a fraction. It indicates division. |
| Improper Fraction | A fraction whose numerator is greater than or equal to the denominator. |
| Mixed Number | A number that contains a whole number and a fraction. |
| Reciprocal | A flipped version of the number or fraction. In other words, 1 divided by that number. When we multiply a number by its reciprocal we get 1. Ex: 3/4 and 4/3 are reciprocals |
| Inverse | Opposite. The inverse of adding 9 is subtracting 9. The inverse of multiplying by 5 is dividing by 5 |
| Inverse Property of Addition | The sum of a number and its negative (the "additive inverse") is always zero. a + (−a) = |
| Inverse Property of Multiplication | Multiplying a number by its reciprocal (the "multiplicative inverse") is always one. a × (1/a) = 1 |
| Balance | When both sides have the same quantity. |
Created by:
lemery1234