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Addends

2 or more numbers that are added

Sum

The result of addition

Difference

The result of subtraction

Subtrahend

A number that is being subtracted

Minuend

A number from which another number is being subtracted

Inverse operation

Operations that undo one another

Fact family

A group of 3 numbers related by addition and subtraction or multiplication or division

Factors

2 or more numbers that are multiplied

Product

The result of multiplication

Quotient

The result of division

Divisor

The number by which another number is divided

Dividend

A number that is divided

Remainder

An amount left after division

Fraction

Numbers that name parts of a whole

Denominator

The bottom number in a fraction

Numerator

The top number in a fraction

Line

Straight collection of points extending in opposite directions without end

Ray

A part of a line that begins at a point and continues without end in one direction

Segment

A part of a line with 2 distinct endpoints

Perimeter

The distance around a shape

Counting numbers

1,2,3,4,5,6...

Whole numbers

0,1,2,3,4,5...

Negative numbers

numbers less than 0

Sequence

A list of numbers arranged according to a certain rule

Terms

Numbers in a sequence

Even numbers

Numbers that can be divided by 2 without a remainder

Odd numbers

Numbers that can't be divided by 2 without a remainder

Place value

The value of a digit based on its position within a number

Positive Numbers

Numbers greater than 0

Opposites

2 numbers whose sum is 0

Integers

...-3,-2,-1,0,1,2,3...

Estimate

To determine an approximate value

Mixed number

A whole numbers and a fraction together

Average

The number found when the sum of 2 or more numbers are divided by the number of addends

Prime numbers

Numbers whose only 2 factors are itself and 1

Factors

A whole number that divides another whole number without a remainder

GCF

The largest number that is a factor of 2 or more given numbers

Improper fraction

A fraction with a numerator that is equal to or greater than the denominator

Ratio

A comparison of 2 numbers by division

Multiples

Products of a selected counting number and other counting numbers

Reduce

Rewrite a fraction in lowest terms

Circumference

The distance around a circle

Diameter

The distance across a circle through its center

Radius

The distance from the center of the circle to a point on the outside

Compass

A tool used to draw circles

Concentric circles

2 or more circles with a common center

Circle

A closed, curved shape in which all points on the shape are the same distance from its center

Plane

A flat surface that has no boundaries

Parallel lines

Lines in the same plane that don't intersect

Intersect

2 lines that share a point

Perpendicular lines

2 lines that intersect at right angles

Oblique lines

Lines that are in the same plane that are neither parallel nor perpendicular

Angles

The opening that is formed When2 lines, rays, or segments meet

Vertex

A point of an angle or polygon where 2 or more lines rays or segments meet

Right angle

An angle whose opening forms a square corner

Acute angle

An angle whose opening is smaller than a right angles

Obtuse angle

An angle whose opening is larger than a right angle and smaller than a straight line

LCM

The smallest whole number that is a multiple of 2 or more given

numbers

numbers

Reciprocal

2 numbers whose product is 1

Term

A number that serves as a numerator or denominator

Degrees

Units for measuring angles

Protractor

A tool used to measure and draw angles

Area

The number of square units needed to cover a surface

Expanded Notation

A way of writing of writing a number as the sum of the products of the digits and the place values of the digits and the place value of the digits

A.M.

The period of time from midnight to just before noon

P.M.

The period of time from noon to just before midnight

PI

The number of diameters equal to the circumference of a circle

Percent

A fraction with a denominator of 100 expressed as a percent sign

Decimal point

The symbol in a decimal number used as a reference for place value

Decimal place

Places to the right of the decimal pint

Exponent

The upper number in an exponential expression

Base

The lower number in an exponential expression

Square root

One of 2 factors of a number

Perfect square

The product when a whole number is multiplied by itself

Circle graphs

A method of displaying data often using percentages

Quantitative

Expressed in or relating to quantities or numbers

Qualitative

Expressed in or relating to categories rather than quantities or numbers

Sales tax

The fee charged on the sale of an item and based upon the item's purchase

Equivalent fractions

Different fractions that name the same amount

Sector

A region bordered by part of a circle and 2 radii

Mean

The average of a list of numbers

Median

The middle number of an ordered list of numbers

Mode

The number or numbers that appears most often in a list of data

Bimodal

Having 2 or more modes

Range

The difference between the largest and smallest numbers on the list

Common denominators

A number that is a denominator of 2 or more fractions

Probability

The ratio of favorable outcomes to all possible outcomes

Chance

A way of expressing the like hood of an event as a percentage

Triangle

3 sided polygon

Quadrilateral

4 sided polygon

Pentagon

5 sided polygon

Hexagon

6 sided polygon

Octagon

8 sided polygon

Polygon

A closed, flat shape with straight sides

Regular polygon

A polygon in which all sides have equal length and all angels have equal measure

Congruent

Having the same size and shape

Side

A line segment hat is part of a polygon

Commutative prop. of addition

Changing the order of the addends does not change the sum

Identity prop. of addition

The sum of any number and 0 is the initial number

Commutative prop. of multiplication

Changing the order of the factors does not change the sum

Identity prop. of multiplication

The product of any number and 1 is equal to the initial number

Zero prop. of multiplication

Any number times 0 is 0

Associative prop. of addition

The grouping of the addends does not change the sum

Associative prop. of multiplication

The grouping of the factors does not change the product