1- array - An arrangement of items in equal rows and columns.
2- divide (division) - To separate into equal groups, to find the number of groups, or the number in each group.
3 - dividend - A number that is being divided.
4 - division sentence - A number sentence that uses the operation of division.
5 - divisor - The number by which the dividend is being divided.
6 - fact family - A group of related facts using the same numbers.
7 - inverse operations - Operations, such as multiplication and division, which undo each other.
8 - partition - A way to divide by sharing one object at a time until all of the objects are gone.
9 - quotient - The answer to a division problem.
10 - repeated subtraction - A way to subtract the same number over and over again until you reach 0.