| A | B |
|---|
| sum | the answer to an addition problem |
| difference | the answer to a subtraction problem |
| quotient | The answer to a division problem. |
| product | The answer to a multiplication problem |
| denominator | the bottom number in a fraction |
| numerator | the top number in a fraction |
| diameter | The distance across a circle through its center. |
| radius | The distance from the center of a circle to the circle. |
| ratio | a comparison of 2 quantities written as a fraction. |
| reciprocal | Two factors whose product equals 1. (ex. 3/4 x 4/3 = 1) |
| equation | A sentence with an equal sign (ex. 3 x 9 = 27) |
| addend | a number used in an addition problem. |
| average | Add up all of the numbers and then divide by the number of numbers added. |
| divisor | The number that is divided by. |
| percent | Means "per hundred" (5% means 5/100) |
| prime numbers | A number that has only two factors, 1 and the number itself. |
| prime factorization | Writing a composite number as a product of prime numbers. |
| composite numbers | Numbers greater than 1 that are not prime. |
| round | To replace a number by another one close to it that is easier to use. |
| opposites | Numbers such as +3 and -3 because their sum is 0. |
