Question | Answer |
Integers | The whole numbers and their opposites form the set of integers |
Opposites | Opposites are two integers the same distance from zero on a number line, but in opposite directions |
Absolute Value | The absolute value of an integer is the distance from zero on a number line |
= | is equal to |
< | is less than |
> | is greater than |
Sum | answer in an addition problem |
Difference | the answer in a subtraction problem |
Product | the answer in a multiplication problem |
Quotient | The answer in an division problem |
Adding two integers with the same sign | Add the absolute values of the integers. The sum has the same sign as the addends |
Adding two integers with different signs | Find the difference (of the absolute value of the addends). The sum has the sign of the integer with the greatest value. |
Subtracting integers | Add its opposite |
Multiplying integers with the same sign | Find the product and give it a positive sign |
Multiplying integers with different signs | Find the product. The product of different signs is always negative |
Dividing integers with same signs | The quotient of two integers with the same sign is positive |
Dividing integers with different signs | The quotient of two integers with different signs is negative |
What is the mean? | The mean is the average you see most ofter |
Finding the mean | 1. Find the sum of the numbers 2. Divide the sum by the number of items |
Variable | is a symbol (usually a letter) that stands for a number |
Variable expression | is an expression (number sentence) that contains at least one variable |
Grouping symbols | (Parentheses) [brackets] and Iabsolute valueI |
Order of Operations | PEMDAS: Parenthesis, exponents,Multiply, Divide, Add. Subtract |
From which direction do you work a problem | Left to Right, from the inside out |
Factor | the numbers you are multiplying to get a product |
Divisibility Test | short cuts for finding factors of whole numbers |
A number is divisible by 2 if... | the last digit is an even number |
A number is divisible by 3 if... | the digits add up to 3,6,or 9 |
A number is divisible by 5 if... | the last digit is 0 or 5 |
A number is divisible by 10 if ... | the last digit is 0 |
Prime number | a whole number greater than 1 that has only 1 and itself as factors |
Composite number | A whole number greater than 1 that has at least one factor besides itself and 1 |
Prime Factorization | Every composite number can be expressed as a product of only prime numbers |
Base number | a base number is a number used as a factor |
Exponent | is the number of times the base number is used as a factor |
Power | is a number that can be writted using an exponent |
kristi | dewey |