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Notecards on the study guide

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Addends

2 or more numbers that are added

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Sum

The result of addition

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Difference

The result of subtraction

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Subtrahend

A number that is being subtracted

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Minuend

A number from which another number is being subtracted

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Inverse operation

Operations that undo one another

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Fact family

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

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Factors

2 or more numbers that are multiplied

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Product

The result of multiplication

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Quotient

The result of division

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Divisor

The number by which another number is divided

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Dividend

A number that is divided

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Remainder

An amount left after division

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Fraction

Numbers that name parts of a whole

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Denominator

The bottom number in a fraction

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Numerator

The top number in a fraction

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Line

Straight collection of points extending in opposite directions without end

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Ray

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

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Segment

A part of a line with 2 distinct endpoints

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Perimeter

The distance around a shape

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Counting numbers

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

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Whole numbers

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

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Negative numbers

numbers less than 0

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Sequence

A list of numbers arranged according to a certain rule

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Terms

Numbers in a sequence

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Even numbers

Numbers that can be divided by 2 without a remainder

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Odd numbers

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

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Place value

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

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Positive Numbers

Numbers greater than 0

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Opposites

2 numbers whose sum is 0

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Integers

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

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Estimate

To determine an approximate value

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Mixed number

A whole numbers and a fraction together

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Average

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

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Prime numbers

Numbers whose only 2 factors are itself and 1

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Factors

A whole number that divides another whole number without a remainder

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GCF

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

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Improper fraction

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

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Ratio

A comparison of 2 numbers by division

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Multiples

Products of a selected counting number and other counting numbers

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Reduce

Rewrite a fraction in lowest terms

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Circumference

The distance around a circle

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Diameter

The distance across a circle through its center

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Radius

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

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Compass

A tool used to draw circles

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Concentric circles

2 or more circles with a common center

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Circle

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

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Plane

A flat surface that has no boundaries

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Parallel lines

Lines in the same plane that don't intersect

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Intersect

2 lines that share a point

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Perpendicular lines

2 lines that intersect at right angles

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Oblique lines

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

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Angles

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

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Vertex

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

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Right angle

An angle whose opening forms a square corner

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Acute angle

An angle whose opening is smaller than a right angles

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Obtuse angle

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

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LCM

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

numbers

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Reciprocal

2 numbers whose product is 1

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Term

A number that serves as a numerator or denominator

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Degrees

Units for measuring angles

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Protractor

A tool used to measure and draw angles

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Area

The number of square units needed to cover a surface

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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

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A.M.

The period of time from midnight to just before noon

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P.M.

The period of time from noon to just before midnight

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PI

The number of diameters equal to the circumference of a circle

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Percent

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

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Decimal point

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

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Decimal place

Places to the right of the decimal pint

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Exponent

The upper number in an exponential expression

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Base

The lower number in an exponential expression

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Square root

One of 2 factors of a number

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Perfect square

The product when a whole number is multiplied by itself

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Circle graphs

A method of displaying data often using percentages

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Quantitative

Expressed in or relating to quantities or numbers

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Qualitative

Expressed in or relating to categories rather than quantities or numbers

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Sales tax

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

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Equivalent fractions

Different fractions that name the same amount

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Sector

A region bordered by part of a circle and 2 radii

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Mean

The average of a list of numbers

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Median

The middle number of an ordered list of numbers

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Mode

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

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Bimodal

Having 2 or more modes

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Range

The difference between the largest and smallest numbers on the list

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Common denominators

A number that is a denominator of 2 or more fractions

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Probability

The ratio of favorable outcomes to all possible outcomes

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Chance

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

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Quadrilateral

4 sided polygon

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Polygon

A closed, flat shape with straight sides

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Regular polygon

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

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Congruent

Having the same size and shape

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Side

A line segment hat is part of a polygon

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Commutative prop. of addition

Changing the order of the addends does not change the sum

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Identity prop. of addition

The sum of any number and 0 is the initial number

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Commutative prop. of multiplication

Changing the order of the factors does not change the sum

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Identity prop. of multiplication

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

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Zero prop. of multiplication

Any number times 0 is 0

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Associative prop. of addition

The grouping of the addends does not change the sum

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Associative prop. of multiplication

The grouping of the factors does not change the product