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# Vocabulary Terms

Term | Definition |
---|---|

Sum | the answer to an addition problem |

Diffirence | the answer to an subtraction |

Product | the answer to a multiplication problem |

Quotient | the answer to a division problem |

Whole Number | a number without a fraction; an interger |

Rational Number | can be written as a number |

Interger | a number with no fractional parts |

Absolute Value | how far a number is from zero |

Commutative Property | number states that two or more numbers can be multiplied/added in any order |

Associative Property | states that for all real numbers a,b,c the sum/product is always the same |

Distributive Property | for all real numbers a,b,c, a(b+c)= ab+ac and a(b-c)=ab=ac |

Identity Property | states that the sum/product is 1 and its self |

Opposite | two numbers that are equal distance from zero on a number line; also called additive inverse |

Additive Inverse | the opposite of a number |

Numeric Expression | an expression that contains only numbers and operations |

Algebraic Expression | an expression that contains at least one variable |

Order of Operations | rule: parenthesis, exponents, multiplication/division, addition/subtraction |

Variable | a symbol represented a quantity that can change |

Constant | a value that does not change |

Coefficent | the number that is multiplied by the variable in an algebraic expression |

Evaluate | to find the value of a numerical expression |

Simplify | to write a fraction in simplest form |

Solution | the set of values that make a statement true |

Term | Expression: the parts of an expression that are added or subtracted Sequence: an element or number in a sequence |

Like Term | terms with the same variables raised to the same exponets |

Perimeter | the distance around a polygon |

Expression | a mathematical phrase that contains operations, numbers or variables |

Equation | a mathematical sentence that shows that two expressions are equivalent |

X-axis | the horizontal axis on a coordinate plane |

Y-axis | the vertical axis on a coordinate plane |

Bar graph | a graph that uses vertical or horizontal bars to display data |

Line Graph | a graph that uses line segments to show how data changes |

Stem- and-Leaf plot | a graph used to organize and display data so that the frequencies can be compared |

Box- and - whisker plot | a graph shows how data are distributive by using the median, quartiles, least value, and greatest value |

Circle graph | a circular chart divided into section that represent percentage of that total |

Measures of central tendency | mean, median, mode |

Measures of variability | range, interquartile range |

Mean | add all the numbers and divide by how many numbers are in a data set. |

Median | the middle number in a data set. |

Mode | the most common number in a data set. |

Range | the difference between the biggest and smallest number |

Outlier | a value much greater or much less in a data set. |

Lower Extreme | smallest value. |

Upper Extreme | largest value. |

First Quartile | median of lower half |

Second Quartile | Median. |

Third Quartile | median of upper half. |

Interquartile range | the difference between the upper and lower extremes in a box-and-whisker plot. |

Percent | a ratio comparing a number to 100 |

Ratio | comparison of two quantities in division. |

Rate | a ratio compares two quantities measured in different rates |

Unit Rate | a rate in which the second quantity in the comparison is 1 unit. |

Multiplicative Inverse | one of two numbers whose product is 1. |

Reciprocal | one of two numbers whose product is 1; also called multiplicative inverse. |

Equivalent | having the same value. |

Compare | to compare two or more things. |

Repeating Decimal | a decimal that repeats forever. |

Terminating Decimal | a decimal that has digits that DO NOT go on forever. |

Numerator | the number above the line in a fraction |

Denominator | the number below the line in a fraction. |

Least Common Multiple (LCM) | smallest number that they both divide into. |

Greatest Common Factor (GCF) | greatest factor that divides 2 numbers |

Line Plot (or Dot Plot) | shows frequency of data along a number line. |

Population | everybody in a group |

Sample | part of a population |

Random Sample | every member of a population has an equal chance of being chosen |

Biased Sample | Unfair sample |

Convenience Sample | a sample that is easy to get |