| A | B |
| divisor | The number used to divide another number. |
| dividend | The number to be divided. |
| quotient | The answer to a division problem. |
| remainder | The number that is left after the division is complete. |
| factor pair | A pair of numbers whose product equals a given number. |
| divisible | A number is divisible by another number when there is no remainder left. |
| composite number | A whole number greater than 1 with more than 2 factors. |
| prime number | A whole number greater than 1 with exactly 2 factors, 1 and itself. |
| prime factorization | The process of writing a whole number as a product of its prime factors. |
| factor tree | A diagram that shows the prime factorization of a composite number. |