# Chapter 1 Math Vocab

### 17 terms by samvelleca

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### variable

a letter which stands for a number

### expression

any combination of numbers, variables,operations and grouping symbols

### value

the number that a variable stands for

### evaluate

to find the value of an expression when the value of the variables are known

### substitute

to replace a variable, term, or expression with an equivalent variable, term or expression

### power

repeated multiplication by the same factor

### base

the repeated factor in a power

### exponent

the number of times that the base is repeated

### area of a square

s=side length
A=s squared
units will be squared

### volume of a cube

s=side length
v=s cubed
units will be cubed

Parentheses
Exponents
Multiplication
Division
Subtractions

### integers

the set of positive and negative, whole numbers, also zero

### absolute value

the distance between a number and zero on the number line

-numbers with same absolute value but different signs
-when added together, their sum is zero

a+(-a)=0
any number plus its opposite equals zero

### definition of subtraction

a-b=a+(-b)
subtraction is the same as adding the opposite of a number

### multiplication property of one

-1*a=-a
any number multiplied by negative one equals its opposite

Example: