# math 099

### 23 terms by BurtonD

#### Study  only

Flashcards Flashcards

Scatter Scatter

Scatter Scatter

## Create a new folder

math terms and formala's

### place value system

number system in which the location, or place,where a digit is written gives it a different value

### number line

like a thermometer turned sideways,used to show how numbers relate to each other

### integers

are whole numbers and there opposites

### comparing integers

use less than, equal to,or greater than

everyone in the number line has an evil twin,inverse= opposite sign

### absolute value

think of GOD, when talking to him you want the results to be positive

### exponent

tells us to multiply the base by itself, equal to the value of the exponent

### *definition

one (1) raised to any power, answer is always 1

### *definition

anything raised to the zero exponent equals zero

### *TIP

if the value of the variable equals a negitive integer,place the negative value in parenthesis

changing the order of two addends does not change the sum

changing the grouping of addends does not change the sum

### NOTE

when using the associative property to make the addition of a group of numbers easier:look for two numbers whose sum is zero,look for two numbers whose sum is a multiple of ten,sum ends in o

### NOTE cont.

if neither of these occur look for two numbers that are easier for you to add.

### rules for signed numbers ADDITION

if the signs are the same add the numbers,take the sign,if the signs are different subtract the numbers,take the sign of the larger number

### multiplication

multiply the numbers,if the signs are the same the answer is positive,if signs are different answer is negative

### divide

divide the numbers, if sign is the same answer is positive, if different the answer is negative

### numerical expressions

please,we want good parenthesis or one integer,solve the absolute value,excuse,exponent,my dear, multiplication or divisionread left to rightdo one oporation at a time

### 1st find the oporation

first integer- rewrite it,2 subtraction- change to addition 3) 2nd integer- write its additive inverse(4) apply the addition rules

### algebraic expressions

only two rules (1) replace each variable with its value (2) use the rules (PEMDAS)

Example: