associative property of addition
changing the grouping of the addends does not change the sum
associative property of multiplication
changing the grouping of the factors will not change the product
average
a single number that can represent all other values in a data set; mean or median
congruent
identical in form; same
decimal
a number that has digits to the right of the symbol that looks like a period . (to show values less than one: tenths, hundredths, etc.)
exponent
a mathematical notation indicating the number of times a quantity is multiplied by itself
factor tree
a diagram showing the prime numbers that are multiplied to get another number
round
to find the nearest value of a number based on a given place value; example: 5,673 => 5,600
identity property of addition
the sum of any number and 0 is equal to the initial number: n + 0 = n
identity property of multiplication
the product of a number and 1 is equal to the initial number: n x 1 = n
integers
numbers consisting of the negative whole numbers, zero, and positive whole numbers
mean
the sum of the values in a data set divided by the quantity of those values
median
the middle number in a set of data when the data is arranged in numerical order. If the data set has an even number, it is the mean of the two middle numbers
mode
the number(s) that are most often in a list or set; there can be none, one, or more than one
number sentence
a mathematical statement that has numbers, at least one operation sign, and an equal or inequality sign
place value
the numerical description of a digit by its position within a number
prime factorization
a whole number expressed as the product of its prime factors
prime number
an integer that has no other whole factors but itself and 1
range
the difference between the greatest and the least values in a set of numbers
whole number
a quantity that has no fraction or decimal
solution
an answer to a problem
bar graph
shows different amounts that are compared using rectangles that have different lengths
scale
showing the relation between the actual size of something vs its size on a map, model, or diagram
infinite
having no limit;no beginning, nor end
tally marks
used to record quantity by making marks
frequency
the number of repetitions
pictograph
a type of graph that uses pictures or symbols to show or compare data
key
a list of the symbols used in a map, chart, or book with explanations of what they mean
vertical
goes straight up and down
horizontal
goes straight back and forth
axis
a line dividing a shape or a fixed line on a graph used to show the position of a point
chart
a graphical representation of data
even
a whole number thatwhen divided by 2 it willNEVER have a remainder
ordinal number
a number defining a thing's position in a series, such as "first" or "tenth
odd
a whole number thatwhen divided by 2 it willALWAYS have a remainder
digit
a single number0 1 2 3 4 5 6 7 8 9
number line
line that shows numbers and their value from left to right
cardinal number
a number that indicates how many there are in a set; gives the quantity
array
an arrangement of objects or pictures in equal columns and rows
consecutive
following in order without interruption
denominator
the number below the bar in a fraction; this names the total number of equal parts
difference
an answer to a subtraction problem
dividend
the number being divided in division
divisor
the number that divides the whole in division
remainder
the amount left over when one number is divided by another
expanded form
a series that shows the value of each digit
factor
numbers you can multiply together to get another number
numerator
the top number of the fraction; this names the number of equal parts indicated
product
an answer to a multiplication problem
quotient
an answer to a division problem
sum
an answer to an addition problem
operation
addition, subtraction, multiplication, or division
expression
a group of symbols that make a mathematical statement....example 8 + 7
multiple
a number that can be divided by other numbers without leaving a remainder (anything left over)
addend
a number that is added to another
area
the number of square units required to cover a surfaceL x WLength times Width
perimeter
the distance around a shape
volume
an amount of space occupied by an object.L x W X HLength times Width times Height