When the numbers can be regrouped but the answers remain the same ex (2x3)x4=2(3x4)=
associative property
The number to be divided
dividend 24/3=8 24 is the answer
calculation
a math problem
divisor
the number by which another number is divided 24/3=8 3 is the answer
equation
a number sentence that uses the equal sign to show two expressions have the same value
equivalent
#NAME?
expanded form
800+30+2
Inequality symbols
<=>
inverse operations
operations that undo each other subtraction undoes addition
quotient
the answer to a division problem
standard form
writing numbers using digits
variable
a symbol or letter that stands for a number ex. x=8
reasonable
is this logical or agreeable
rule
a determined method for doing math,
ex add six
multiplication
means equal groups
factor
the numbers you multiply to get a ex 2x3
sum
answer to addition problem
the answer to a subtraction
difference
estimation
round the numbers
fraction
a part of a whole
fraction bar means
division
numerator
the top number of a fraction
denominator
the bottom number of a fraction
mixed number
2 and 1/2
improper fraction
15/13 a fraction with a bigger number on top
equivalent fraction
fractions that are equal ex 1/2=4/8
area
lxw
perimenter
add all the sides
increase
go up
decrease
go down
horzontal
a line that goes from left to right
vertical
a line that goes up and down is