| A | B |
|---|
| Numbers can be added in any order, and the sum will be the same. | Commutative Property of Addition |
| The way addends are grouped does not change the sum. | Associative Property of Addition |
| When you add zero to any number, the sum is that number. | Identity Property of Addition |
| An expression has numbers and operation signs, but not an equal sign. | Expression |
| a letter or symbol that represents an unknown number. | Variable |
| a number sentence stating that two amounts are equal. | Equation |
| a related or matched pair of numbers always arranged the same way – the first number followed by the second number | Ordered Pair |
| when you combine equal groups, you can multiply to find how many in all - the inverse operation of division. | Multiply |
| a number that is multiplied by another number to find the product | Factor |
| the answer to a multiplication problem | Product |
| the product of a given whole number and another whole number | Multiple |
| an arrangement of items in rows and columns | Array |
