# Math vocab

## 101 terms

### COMMON DENOMINATOR

KEEP the sign of the first number CHANGE subtraction to addition CHANGE the sign of the second number *this is for SUBTRACTION only

### KEEP CHANGE CHANGE (KCC)

A denominator that is the same in two or more fractions.

### ADDITIVE INVERSE PROPERTY

Any number added to its negative will equal zero...example -8 + 8 = 0

### PRIME FACTORIZATION

Breaking down a composite number until all of the factors are prime

### LEAST COMMON DENOMINATOR

The largest factor that two or more numbers have in common.

### PROBABILITY

chance that something will happen

### PRIME NUMBERS

Divisible by 1 or itself

### ARITHMETIC SEQUENCE

a sequence in which each term is found by adding the same number to the previous term

### SIMPLEST FORM

The lowest form of a fraction.

### GREATEST COMMON FACTOR

the least common multiple of the denominators of the fractions

### REFLECTION

A transformation that "flips" a figure over a mirror or reflection line.

### TWO-STEP EQUATION

an equation having two different operations

### PARALLELOGRAM

a quadrilateral whose opposite sides are both parallel and equal in length

### ORDERED PAIR

A pair of numbers that give the location of a point on a x and y grid. for example graph (3, 2)

### QUOTIENT

an equation that requires only one step to solve...one operation

### ORIGIN

the point (0,0) where the x-axis and the y-axis intersect in a coordinate plane

### ONE-STEP EQUATION

the answer to a division problem

### ABSOLUTE VALUE

The distance a number is from zero on a number line. ALWAYS POSITIVE

### INTEGERS

Negative or positive whole number

subtraction

### LOWER EXTREME

The smallest number in a data set (box & whisker).

### INTERQUARTILE RANGE

The difference between the upper and lower quartiles.

### MODE

The number that occurs most often in a set of data

### LESS THAN

switch and subtract

### X-AXIS

the horizontal axis...left to right

### STEM

the greatest place value common to all the data that is written to the left of the line in a stem-and-leaf-plot

### Y-AXIS

the vertical axis on a coordinate plane...top to bottom

### INEQUALITIES

a mathematical sentence involving <, >, or = plus < or >

### SEPARATED

to divide into different parts or sections

### DIFFERENCE

a group of symbols that make a mathematical statement....example 8 + 7

### PRODUCT

multiplication. For example the product of 2 and 3 is 6.

### EXPRESSION

the answer to a subtraction problem

### CLUSTER

a grouping of a number of similar things

multiply

### LEAF

the second greatest place value of data in a stem and leaf plot

...

### RATIO

a comparison of two numbers by division

### OUTLIER

Any data point that sticks out. NOT all data sets have one.

### MEDIAN

The middle number in a set of numbers that are listed in order

### RATE

A ratio of two numbers measured in different units.

### MEAN

the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores

### RANGE

subtract the smallest from the biggest number in the data

### TOTAL

adding all the numbers to find the total

### INTERVAL

the difference between two numbers on the scale

### SCALE

Includes all numbers

...

### AREA

the space inside a shape

### ORDER OF OPERATIONS

the order in which operations in an expression to be evaluated are carried out. 1. parentheses 2. exponets 3. multiplication and divison 4. addition and subtraction

solve

### UNIT RATE

a letter or other symbol that represents a number

### VARIABLE

a rate where the comparison is to one unit...example 99 cents per egg

### MULTIPLES

numbers you say when you skip count. Multiples of 2 are: 2,4,6,8,...

### UPPER EXTREME

the largest number of a set of data

### UPPER QUARTILE

The median of the upper half of a set of data.

### SUBSTITUTE

replace, To put a number in place of a variable

### LOWER QUARTILE

The median of the lower half of data (box & whisker).

### FACTORS

Numbers that are multiplied together to get a product ex. factors of 52 are 2, 4, 13, and 26

### PERCENT

a ratio that compares a number to 100.

### ROTATIONAL SYMMETRY

The ability of a figure to be rotated less than a full circle and exactly match its original image

### TRIANGLE

a three-sided polygon

### TRAPEZOID

a quadrilateral with exactly one pair of parallel sides

### SUPPLEMENTARY ANGLE

When the sum of the measures of a pair of angles add up to 180°

### SSS CONGRUENCE

when three sides of one triangle are congruent to three sides of another triangle

### TRANSVERSAL

a line that intersects two or more lines

### VERTICAL ANGLES

two angles whose sides form two pairs of opposite rays

### SIMILAR TRIANGLES

Similar triangles have the same shape: corresponding angles are equal and corresponding sides are proportional

### PARALLEL LINES

a four-sided polygon

### RIGHT TRIANGLE

a triangle with 1 right angle

### LINE SYMMETRY

a line that divides a figure into 2 halves that match exactly when the figure is folded on that line

...

### POLYGON

a flat shape with many straight sides and angles

### RHOMBUS

a parallelogram with four equal sides

2 sides, 1 angle

### ISOSCELES TRIANGLE

triangle with two congruent sides....third side is isolated

### OBTUSE ANGLE

measuring between 90 and 180 degrees

### PERPENDICULAR

intersecting at or forming right angles

### RECTANGLE

A quadrilateral in which the opposite sides are parallel, all angles are 90 degrees

### SQUARE

A quadrilateral with 4 sides that are equal and has all 90 degree angles

...

### CONGRUENT TRIANGLES

2 triangles are congruent if and only if all pairs of corresponding sides and angles are congruent

### EQUILATERAL TRIANGLE

all sides are congruent on the triangle

### ALTERNATE INTERIOR ANGLES

angles are on opposite sides of the transversal and on the inside of the given lines

### COMPLEMENTARY ANGLES

Two angles whose sum is 90 degrees

### CORRESPONDING ANGLES

angles in the same place on different lines

### ALTERNATE EXTERIOR ANGLES

Angles that lie outside a pair of lines and on opposite sides of a transversal.

### ACUTE ANGLE

an angle that is less than 90 degrees

...

### COMPOSITE NUMBERS

a whole number greater than 1 that has more than two factors

### GEOMETRIC SEQUENCE

a sequence in which each term is found by multiplying the previous term by the same number

### TRANSFORMATIONS

movements of geometric figures

### POSITIVE INTEGERS

numbers greater than zero

### NEGATIVE INTEGERS

numbers less than zero

### SCALENE TRIANGLE

keep the first fraction, change division to multiplication, flip the second fraction... use when dividing fractions

### LEAST COMMON MULTIPLE

The smallest multiple (other than zero) that two or more numbers have in common.

### TRANSLATION

A transformation that "slides" each point of a figure the same distance in the same direction.

### OPPOSITES

two numbers that have the same absolute value but have different signs

### KEEP CHANGE FLIP (KCF)

A triangle with no congruent sides

90 degree angle