| A | B |
| addends | numbers that are added together |
| addition | arithmetic operation of summing |
| associative property | changing the grouping does not change sum or product |
| commutative property | order of two numbers may be switched around and the answer is the same |
| composite number | whole number greater than 1 that has has more than 2 factors |
| decimal | number with one or more digits to the right of the decimal point |
| difference | answer to a subtraction problem |
| distributive property | a(b+c)=ab+ac |
| dividend | number to be divided by another number |
| quotient | answer to a division problem |
| division | arithmetic operation that is the inverse of multiplication |
| divisor | number you divide by |
| factors | numbers that form a product when multiplied together |
| hundredth | one part in a hundred |
| identity property | adding or multiplying by these numbers does not change the answer |
| improper fraction | fraction in which the numerator is greater than or equal to the denominator |
| integer | any of the natural numbers (positive or negative) or zero |
| irrational number | number that cannot be written as a quotient of two integers |
| million | number that is represented as a one followed by 6 zeroes |
| minuend | first number in a subtraction problem |
| mixed number | whole number and a fraction |
| multiplication | arithmetic operation that is the inverse of division |
| PEMDAS | acronym for order of operations |
| powers of ten | numbers formed by multiplying ten by itself |
| prime numbers | whole number that has exactly two factors, 1 and itself |
| product | answer to a multiplication problem |
| quotient | answer to a division problem |
| rational number | integer or a fraction |
| scientific notation | decimal point after the first digit times 10 to a power of 1 or more |
| subtraction | arithmetic operation that finds the difference between two quantities or numbers |
| subtrahend | number that is subtracted |
| sum | whole amount |
| tenth | one of ten equal parts |
| thousandth | one part in a thousand |
| whole number | positive number, including zero, that does not contain a fraction or decimal |
| billion | number that is represented as a one followed by 9 zeroes |
| counting number | all of the whole number but not zero |