| A | B |
| divide | to separate into equal groups, to find the number of groups, or the number in each group |
| division sentence | a number sentence using numbers and the division sign |
| fact family | a group of related facts using the same numbers |
| partition | to divide or "break up" |
| dividend | a number that is being divided |
| divisor | the number by which the dividend is being divided |
| inverse operations | operations that undo each other, like multiplication and division |
| quotient | the answer to a division problem |
| related facts | basic facts using the same numbers |
| repeated subtraction | subtraction of the same number over and over again |