| A | B |
| Sum | answer to addition problem |
| Difference | answer to subtraction problem |
| Product | answer to multiplication problem |
| Quotient | answer to division problem |
| Standard Form | the normal way to write a number |
| Expanded Form | Number written out as a sum |
| Commutative Property of Addition | a + b= b + a |
| Commutative Property of Multiplication | ab = ba |
| Associative Property of Addition | (3+4)+7 = 3 +(4+7) |
| Associative Property of Multiplication | (a*b)*c = a*(b*c) |
| Distributive Property | 3(4 + 9) = (3*4)+(3*9) |
| Identity Property of Addition | a + 0 = a |
| Identity Property of Multiplication | a * 1 = a |
| Inverse Property of Addition | When a number is added to its opposite, the sum is 0 |
| Dividend | the number that is divided |
| Divisor | the "divided by" number |
| multiple | a number that can be evenly divided by a number, n |
| factor | a number that is multiplied (or can evenly divide a given number) |
| addend | a number that is added |
| Inverse Property of Multiplication | When a number is multiplied by its reciprocal, the product is 1 |
| variable | a letter that stands for an unknown number |
| constant | a value that does not change |
| Expression | a combination of variable(s) and constant(s) that represents a value |
| Evaluate | substitute a given value for a variable, then simplify |
| Addition Property of Equality | if a = b, then a + c = b + c |
| Multiplication Property of Equality | if a = b, then ac = bc |
| Operations | Add, subtract, multiply or divide |
| Subtraction | Opposite of addition |
| Division | Opposite of multiplication |
| Addition | Opposite of subtraction |
| Multiplication | Opposite of division |
| Inverse Operation | Arithmetic operation that we use to "undo" another operation |
| Greatest Common Divisor (GCD) | The largest number that will evenly divide two (or more) given numbers |
| Least Common Multiple 9LCM) | the smallest number that appears on the "times table" of two (or more) given numbers |
| Prime | A natural (counting) number that has exactly two factors, itself and and 1 |
| Composite | A natural (counting) number that has more than two factors |
| Simplest form | A fraction in which the numerator and denominator have no common factor, other than 1 |
| Improper fraction | A fraction in which the absolute value of the numerator is greater than that of the denominator |
| Repeating decimal | A decimal with a fixed block of digits that repeats forever |
| Terminating decimal | A decimal that ends in zero after a certain place |
| Proper fraction | A fraction in which the absolute value of the numerator is less than that of the denominator |