KEEP CHANGE CHANGE (KCC) KEEP the sign of the first number CHANGE
subtraction to addition CHANGE the sign of the second number *this is for
SUBTRACTION only
COMMON DENOMINATOR
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
GREATEST COMMON FACTOR 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.
LEAST COMMON DENOMINATOR
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)
ONE-STEP EQUATION
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
QUOTIENT the answer to a division problem
ABSOLUTE VALUE The distance a number is from zero on a number line. ALWAYS
POSITIVE
MORE THAN switch and add
INTEGERS Negative or positive whole number
DECREASED BY subtraction
SUM answer to an addition problem
LOWER EXTREME The smallest number in a data set (box & whisker).
INTERQUARTILE RANGE The difference between the upper and lower quartiles.
INCREASED BY
addition
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
EXPRESSION
a group of symbols that make a mathematical statement....example
8+7
PRODUCT multiplication. For example the product of 2 and 3 is 6.
DIFFERENCE
the answer to a subtraction problem
CLUSTER
a grouping of a number of similar things
OF
multiply
LEAF the second greatest place value of data in a stem and leaf plot
EQUATIONS a statement that two expressions are equivalent. For example, 3 x 9 = 27
and 8+x=10
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
PERIMETER The distance around a figure
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
EVALUATE solve
VARIABLE a letter or other symbol that represents a number
UNIT RATE 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
QUADRILATERAL 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
PARALLEL LINES lines in the same plane that never intersect
POLYGON a flat shape with many straight sides and angles
RHOMBUS a parallelogram with four equal sides
SAS CONGRUENCE 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
ASA CONGRUENCE
2 angles 1 included side...all equal
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 ANGLESangles 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
ROTATION the act of rotating as if on an axis
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
KEEP CHANGE FLIP (KCF)
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
SCALENE TRIANGLE
A triangle with no congruent sides
RIGHT ANGLE
90 degree angle