integers
All whole numbers (both positive and negative) and zero.
consecutive numbers
in order. Ex: 8, 9, 10. OR by even #'s 2,4,6,8
composite number
a number that has more than two factors. Example: 8 is a composite number because it has four factors. 1, 2,4, 8.
prime number
A whole number that has exactly two factors, 1 and itself.
rational number
written as a ratio (fraction)
commutative property of addition
the sum stays the same when the order of the addends is changed. a+b = b+a
commutative property of multiplication
the product stays the same when the order of the factors is changed ab = ba
distributive property
a (b+c) = (ab) + (ac) and a(b-c) = (ab) - (ac)
associative property
Changing the grouping of numbers will NOT change the value. For example: (7 + 4) + 8 = 7 + (4 + 8) also works with multiplication
standard form
3,425
expression
a group of symbols that make a mathematical statement....example 8 + 7
equivalent
equal to
sum
The answer in an addition problem
product
The answer in a multiplication problem
quotient
the result of the division of one quantity by anotherdividend/divisor=quotient Example 12/4=3
remainder
an amount left over when one number is divided by another.
divisibility rules
last digit even then divisible by 2, last digit 0 or 5 divisibile by 5, last digit 0 divisible by 10, sum of digits divisible by 3 or 9 then divisible by 3 or 9
factor
an integer that divides evenly into anotherEx: 2x6=12; 2 and 6 are factors of 12
multiples
the multiples of a number are all the numbers you get when you count by that number
PEMDAS -- order of operationsPlease excuse my dear aunt sally
Parentheses, Exponents,Multiplication and Division(reversible), Addition and Subtraction (reversible)
algebra
2(5) + x = 14 solve for x
algebra 2
2x + x + 4x = 14, solve for x
perimeter
Adding all the sides of a shape together. The distance around a figure
area of a rectangle (LxW=A) or W= A/L or L=A/W
multiply the LENGTH by the WIDTH (squared)
area of a triangle
1/2 of length multiplied by width (squared)
formula for volume of a cube
V= BH in cubic units. Volume = base * height
congruent
Figures that have the same size and shape.
vertical
a line that goes up and down
Vertical angles
the opposite angles formed when two lines intersect. Vertical angles are congruent.
horizontal
a line that goes side to side
parallel
lines that run exactly the same direction. can bevertical or horizontal.
perpendicular
one vertical and one horizontal line that meet
line segment
A part of a line with two endpoints
Vertex
A point where two or more straight lines meet to form an angle.
pentagon
5 sided polygon
hexagon
6 sided polygon
octagon
8 sided polygon
quadrilateral
a four-sided polygon
trapezoid
A quadrilateral (4 sides & 4 angles) with one pair of parallel sides.
parallelogram
A quadrilateral (4 sides & 4 angles) where opposites sides are parallel. (ie: Rectangle, square, rhombus, & diamond are parallograms)
rhombus
A parallelogram with four equal sides
sphere
A solid shape that is perfectly round like a ball. No faces, edges, or vertices.
oval
...
equilateral triangle
A triangle with three congruent sides
reflection
A transformation of a figure that flips the figure across a line
symmetry
A plane figure that can be folded along a line so the two parts match.
symmetry of a circle
a circle has an infinite number of lines of symmetry
congruency
figures with the same shape and size
similarity
Figures or shapes that have the same shape but not necessarily the same size
coordinates
Ordered pairs that identify points on a coordinate plane. (x,y)
coordinate plane
a grid formed by a horizontal line called the x-axis and the vertical line called y-axis
Venn Diagram
a drawing that shows relationships among sets of objects
input/output formula
try divided by 2, then add one
probability
A number that describes how likely it is that an event will occur. Written as a ratio (or fraction with the denominator being the total number of choices and the numerator being one of the choices)
mean (average)
The average of a set of numbers. It is found by adding all the numbers together and then dividing by the amount of numbers.
median
the middle number of a set of numbers when the numbers are arranged from least to greatest
mode
Most frequently occurring number
range
Distance between highest and lowest scores in a set of data.
percentage
A portion of 100
square root
a number that when multiplied by itself equals a given number
fractions work
learn how to: add with unlike denominator, multiply a fraction by a whole number, turn an improper fraction into a mixed number and reverse, turn a fraction into a decimal, learn 1/2 = .5, how to find 1/2...
decimal work
add decimals, add money, read .1 as 1/10 etc,