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# Sam's General Math

### A little bit of everything

Question | Answer |
---|---|

Associative Property of Addition | The property that states that the way addends are grouped does not change the sum Example: (5 + 9) + 3 = 5 + (9 + 3) 14 + 3 = 5 + 12 17 = 17 |

Associative Property of Multiplication | The property that states that the way factors are grouped does not change the product Example: (2 x 3) x 4 = 2 x (3 x 4) 6 x 4 = 2 x 12 24 = 24 |

Average | The number found by dividing the sum of a set of numbers by the number of addends. See also mean. |

Bar graph | A graph that uses horizontal or vertical bars to display countable data Example: |

Cardinal number | A number that tells how many Examples: 4 puppies93 cents |

Circle graph | A graph the shows how parts of the data are related to the whole and to each other Example: |

Commutative Property of Addition | The property that states that when the order of two or more addends is changed, the sum is the same Example: 4 + 5 = 5 + 4 |

Commutative Property of Multiplication | The property that states that when the order of two or more factors is changed, the product is the same Example: 5 x 7 = 7 x 5 |

Composite number | A whole number having more than two factors Example: Composite Numbers Not Composite NumbersNumber Factors Number Factors4 1, 2, 4 1 16 1, 2, 3, 6 2 1, 28 1, 2, 4, 8 3 1, 39 1, 3, 9 5 1, 5 |

Coordinates | The numbers in an ordered pair Example: The coordinates of A are (1, 3). The coordinates of B are (-4, -3). |

Cumulative frequency | A running total of the number of items counted or surveyed Example: |

Data | Information collected about people or things |

Decimal number | A number with one or more digits to the right of the decimal point Example: 3.27 |

Decimal point | A symbol used to separate dollars from cents in money, and the ones place from the tenths place in decimal numbers Example: |

Decimal system | A system of computation based on the number ten Example: |

Ascending | From least to greatest number Example: These numbers are in ascending order. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 |

Descending | From greatest to least number Example: These numbers are in descending order. 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 |

Difference | The answer in a subtraction problem Example: 88 – 5 = 3 – 533 is the difference. |

Digit | Any one of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9 used to write numbers |

Distributive Property of Multiplication | The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products Example: 3 x (4 + 2) = (3 x 4) + (3 x 2) 3 x 6 = 12 + 6 18 = 18 |

Double-bar graph | A bar graph used to compare two similar kinds of data Example: |

Equivalent | Having the same value Example: |

Equivalent decimals | Decimals that name the same amount Example: 0.5 = 0.50 = 0.500 |

Evaluate | To find the value of a numerical or algebraic expression Example: |

Expanded form | A way to write numbers by showing the value of each digit Examples: 635 = 600 + 30 + 51,479 = 1,000 + 400 + 70 + 9 |

Exponent | A number that shows how many times the base is used as a factor Example: The exponent is 3, indicating that 8 is used as a factor 3 times. |

Frequency | The number of times an event occurs |

Frequency table | A table that uses numbers to record data about how often something happens Example: FREQUENCY TABLEDay Number of Students(Frequency)Monday 15 Tuesday 13 Wednesday 5 Thursday 9 Friday 17 |

Histogram | A bar graph that shows the number of times data occur within intervals Example: |

Hundredth | One of one hundred equal parts Example: |

Line graph | A graph that uses a line to show how data change over time Example: |

Acute angle | An angle measuring less than 90 degreesExample: |

Acute triangle | A triangle in which all three angles are acute Examples: |

Angle | Angle A figure formed by two rays that have a common endpoint Example: |

Chord | A line segment with its endpoints on a circle Example: |

Circle | A closed plane figure with all points on the figure the same distance from the center Example: |

Circumference | The distance around a circle Example: |

Closed figure | A figure that begins and ends at the same point Examples: |

Cone | A solid figure that has a circular base and one vertex Examples: |

Congruent | Having the same size and shape Example: The triangles are congruent. |

Congruent figures | Figures that have the same size and shape Example: The triangles are congruent. |

Coordinate plane | A plane formed by two intersecting and perpendicular number lines called axes Example: |

Coordinates | The numbers in an ordered pair Example: |

Cube | A solid figure with six congruent square faces Examples: |

Cylinder | A solid figure that has two parallel bases that are congruent circles Examples: |

Degree (°) | A unit for measuring angles and temperatureExamples: |

Diameter | A line segment that passes through the center of a circle and has its endpoints on the circle Example: diameter |

Dimension | A measure in one direction; the length, width, or height of a figure |

Edge | The line segment where two faces of a solid figure meet Example: edge |

Equilateral triangle | A triangle with three congruent sides Example: |

Face | A polygon that is a flat surface of a solid figure Example: face |

Figurate numbers | Numbers that can be represented by geometric figures Examples: |

Hexagon | A polygon with six sides and six angles Examples: |

Hypotenuse | In a right triangle, the side opposite the right angle; the longest side in a right triangle Example: hypotenuse |

Intersecting lines | Lines that cross at exactly one point Example: Line EF intersects line GH. |

Isosceles triangle | A triangle with two congruent sides Example: |

Line | A straight path in a plane that goes on forever in opposite directions Example: line AB or line BA |

Line segment | A part of a line that includes two points, called endpoints, and all of the points between them Example: line segment AB or line segment BA |

Line symmetry | A figure has line symmetry if a line can separate the figure into two congruent parts Example: |

Obtuse angle | An angle whose measure is greater than 90° and less than 180° Example: |

Obtuse triangle | A triangle that has one obtuse angle Example: |

Octagon | A polygon with eight sides Examples: |

Ordered pair | A pair of numbers used to locate a point on a coordinate plane; the first number tells how far to move horizontally and the second number tells how far to move vertically Example: (1,2) represents 1 unit to the right of zero and 2 units up. |

Parallel lines | Lines in a plane that never intersect Example: |

Parallelogram | A quadrilateral whose opposite sides are parallel and congruent Examples: |

Pentagon | A polygon with five sides Examples: |

Perpendicular lines | Two lines that intersect to form four right angles Example: |

Pi | The ratio of the circumference of a circle to its diameter An approximate decimal value of pi is 3.14. |

Plane | A flat surface that extends without end in all directions Example: Planes are named by three points in the plane. |

Plane figure | A figure which lies in a plane Examples: |

Point | An exact location in space, usually represented by a dot Example: point A |

Point symmetry | When a figure can be turned half way about a central point and still look the same Example: |

Polygon | A closed plane figure formed by three or more line segments Examples: |

Polyhedron | A solid figure with flat faces that are polygons Examples: |

Prism | A solid figure that has two congruent, polygon-shaped bases, and other faces that are all rectangles Examples: rectangular prism triangular prism |

Protractor | A tool used for measuring or drawing angles Example: |

Pyramid | A solid figure with a polygon base and all other faces triangles that meet at a common vertex Example: This is a square pyramid |

Quadrilateral | A polygon with four sides Examples: |

Radius | A line segment with one endpoint at the center of a circle and the other endpoint on the circle Example: radius |

Ray | A part of a line, with one endpoint, that continues without end in one direction Example: ray CD |

Rectangle | A parallelogram with four right angles Example: |

Rectangular prism | A solid figure in which all six faces are rectangles Example: |

Reflection (flip) | A movement of a figure to a new position by flipping it over a line Example: |

Regular polygon | A polygon in which all sides are congruent and all angles are congruent Examples: |

Rhombus | A parallelogram with four congruent sides Example: |

Right angle | An angle formed by perpendicular lines, line segments, or rays and with a measure of 90° Example: |

Right triangle | A triangle with one right angle Example: |

Rotation (turn) | A movement of a figure by turning it around a fixed point Example: |

Created by:
17SPinnegar