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Number Sense

Terms

undefined, object
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product
answer you get when multiplying numbers.
negative number
a number less than 0.
common denominator
a whole number that is the denominator for all members as a group of fractions.
equivalent
equal in value
quotient
answer you get when dividing numbers where the divisor is not zero.
sum
answer you get when adding numbers.
approximation
an estimate of a mathematical value that is not exact.
difference
answer you get when subtracting numbers.
common factor
a whole number that is a factor of each number in a set of numbers.
average
the sum of a set of values divided by the number of values.
quadrants
the four sections that the coordinate plane is divided.
integers
whole numbers and there opposites. 0 is an integer but is neither positive or negative
positive number
A number greater than zero.
rational numbers
Numbers that can be expressed as a quotient of two integers where the divisor is not zero. 1/2. .5, 1.799
absolute value
a number's distance from zero. It is always positive.
opposites
Opposites are the same distance from zero on a number line. The sum of two opposite numbers is zero.
prime number
a number that is divisible by itself and one only.
commutative property
the order of numbers does not change the result when multiplying and dividing.
associative property
used in addition and multiplication to group numbers for easier computations.
inverse operations
operations that undo each other. Addition is the inverse of subtraction. Division is the inverse of multiplication.
distributive property
a(b+c)= ab+ac, where a,b, and c are integers. also works for subtraction.
number sentence
a statement that gives the relationship between two expressions.
additive inverse
a number that when added to a given number results in a sum of zero.
order of operations
order in which to perform mathematical operations. PEMDAS
algorithm
a set of rules for performing a procedure.

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