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# Math Vocab (6th)

### Math Vocabulary Lessons 1-20, Inv 1 & 2

TermDefinition
Commutative Property of Addition changing the order of the addends does not change the sum (4+3 or 3+4)
Identity Property of Addition The sum of any number and 0 is equal to the initial number. (4+0=4)
Identity Property of Multiplication the product of any number and 1 is equal to the initial number (8x1=8)
Zero Property of Multiplication if zero is a factor in multiplication, the product is 0
Associative Property of Addition The grouping of addends does not affect their sum
variable a symbol (usually a letter) that represents a number that is not given (unknown)
counting numbers number used to count (1,2,3,4...)
whole numbers members of the set (0,1,2,3,...)
Integers set of counting numbers, their opposites, and zero
mean average
prime number counting numbers that have exactly 2 factors: itself and 1
histogram method of displaying a range of data. A special type of bar graph that displays data in intervals of equal size with no space between bars
line a straight collection of points extending in opposite directions without end
ray a part of a line that begins at a point and continues without end in one direction
segment a part of a line with two distinct points
perimeter the distance AROUND a closed, flat shape
minuend a number from which another number is subtracted (first number in a subtraction problem)
subtrahend a number that is subtracted (second number in a subtraction problem)
dividend the number that is divided
divisor the number by which the dividend is divided
quotient the answer to a division problem
difference the result of subtraction