Vocab
Whole numbers and their opposites and zero
Integers
A decimal that repeats a digit or group of digits forever
Repeating decimal
Changing the group of numbers will not change the value for example: (7+4)+8=7+(4+8) also, works with multiplication
Associative property
A comparison of two quantities by division
Ratio
The percent of quantity increases or decreases from its original amount
Percent of change
The sum of two numbers and zero
Additive inverse
A number that can be written as a ratio; includes natural numbers, whole numbers, integers, fractions, and decimals
Rational numbers
Remember, stays the same
a) The sum of a number and zero is the number
b) The product of a number and one is the number
Identity property
A ratio that compares two quantities measured in different units
Rate
The amount by which the regular price of an item is reduced
Discount
The product of two numbers is 1
Multiplicative inverse
A number that cannot be written as a ratio; includes pi, decimals that do not repeat or terminate ,square root of non-perfect squares
Irrational numbers
The product of any number and zero is zero
Zero property of multiplication
And equation stating that two ratios are equal
Proportion
A tax on the sale of merchandise or service
Sales tax
The distance of a number from zero; this is always positive
Absolute value
Also, called multiplicative inverse, the flip of the fraction, two numbers that have a product of one
Reciprocal
a(b+c)=ab+ac; Multiplying the outside value by each term inside the parentheses
Distributive property
A rate with a denominator of one
Unit rate
A fee paid to someone based on the amount sold
Commission
a decimal that ends or terminates
Terminating decimal
The property that says that two or more numbers can be added or multiplied in any order without changing the result
Commutative property
Equal
Equivalent
Out of 100; A ratio that compares a number to 100
Percent
An expression made up of integers variables, constants and algebraic operations
Algebraic expression