Flashcards in Algebra Deck (31)

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1

## Quantity

### Anything that can be measured or counted

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## Variable Quantities

### Values that can change or vary

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## Variable

### A symbol, usually a letter, that represents the value of a quantity.

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## algebraic expression

### a mathematical phrase that includes one or more variables.

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## numerical expression

### a mathematical phrase involving numbers and operation symbols, but no variables

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## power

### has a base part and an exponent part

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## exponent

### tells you how many times to use the base as a factor

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## factor

### numbers that are multiplied to find a product

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## base

### the factor that is repeated in a power

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## simplify

### a numerical expression that is replaced with its single numerical value

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## evaluate

### replacing each variable with a given number and calculate

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## perfect square

### the square of an integer

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## square roots

### the number that was multiplied by itself to find a product

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## principal square root

### non-negative square root

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## radicand

### expression under the square root symbol

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## radical

### square root symbol and radicand together

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## set

### a well-defined collection of objects

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## elements

### each object in a set

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## subset

### consists of elements from within the given set

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## rational numbers

### any number that you can write as a fraction. i.e. 1/2

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## natural numbers

### counting numbers starting at one and going higher {1,2,3,...}

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## whole numbers

### counting numbers and including zero. i.e. {0,1,2,3,...}

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## integers

### whole numbers and including their opposites. i.e. {...-2,-1,0,1,2,...}

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## irrational numbers

### cannot be written as a fraction

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## real numbers

### the set of rational and irrational numbers

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## equivalent expressions

### algebraic expressions that have the same value for all values of the variables

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## commutative properties

### order of addition doesn't matter; order of multiplication doesn't matter

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## associative properties

### order of addition doesn't matter; order of multiplication doesn't matter

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## additive identity property

### adding zero to a value keeps the value the same

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## zero property of multiplication

### the product of a value and zero is always zero

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