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Vocabulary Lessons 1-25
Saxon Math
49
Mathematics
5th Grade
10/27/2010

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Term
counting numbers
Definition
1,2,3,4,5,6,7, etc.
Term
digit
Definition
any of the symbols used to write numbers: 0,1,2,3,4,5,6,7,8,9
Term
sequence
Definition
ordered list of numbers
Term
term
Definition
each number of the sequence
Term
whole numbers
Definition
counting numbers and zero
Term
even numbers
Definition
12,14,16,18,20
Term
odd numbers
Definition
7,9,11,13,15
Term
expanded form
Definition
a way of writing a number that shows the value of each digit
Term
addend
Definition
numbers added together
Term
commutative property
Definition
digits in a mathematical property change position but answer stays the same
Term
algorithm
Definition
procedure for getting an answer
Term
identity property
Definition
sum of any number and 0 is equal to the initial number
Term
sum
Definition
answer to addition problem
Term
ordinal numbers
Definition
numbers that describe position or order
Term
difference
Definition
the result of subtraction
Term
fact family
Definition
a group of three numbers related by addition & subtraction or multiplication & division
Term
inverse operation
Definition
opposite operation that undoes each other such as addition/subraction or multiplication/division
Term
equation
Definition
number sentence with equal sign
Term
related number sentence
Definition
group of numbers to express a meaning without using words
Term
geometry
Definition
study of shapes
Term
line
Definition
straight line extending in both directions
Term
points
Definition
exact location in a space
Term
line segment
Definition
part of a line between two endpoints
Term
ray
Definition
part of a line that begins at one endpoint and extends forever in one direction
Term
horizontal
Definition
lines extending left to right
Term
vertical
Definition
lines extending up and down
Term
oblique
Definition
slanted lines
Term
number line
Definition
line that shows numbers at certain distances
Term
negative number
Definition
numbers on a number line that are to the left of zero
Term
tick mark
Definition
small marks above each number on a number line
Term
integers
Definition
all counting numbers, positive and negative including zero
Term
tally marks
Definition
marks that are used to keep track of a count
Term
identity property of multiplication
Definition
product of any number and one is equal to that number
Term
factor
Definition
numbers multiplied together
Term
multiple
Definition
a product of a counting number and another number
Term
product
Definition
answer to a multiplication problem
Term
property of zero
Definition
zero times any number is zero
Term
division
Definition
searching for a missing factor
Term
divisor
Definition
number in front of the division box
Term
dividend
Definition
number inside the division box
Term
quotient
Definition
the result of division
Term
remainder
Definition
an amount left after division
Term
associative property of addition
Definition
grouping of addends does not affect their sum
Term
associative property of multiplication
Definition
grouping of factors does not affect their product
Term
operations of arithmetic
Definition
four basic mathematical operations: addition, subtration, multiplication, division
Term
parentheses
Definition
pair of symbols used to set apart parts of an expression to be evaluated first
Term
denominator
Definition
the bottom number of a fraction; number of parts in a whole
Term
numerator
Definition
the top number of a fraction; number of parts counted
Term
fraction
Definition
a number that names part of a whole
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