| Term | Definition |
| factors | the numbers multiplied together in a multiplication problem |
| product | the answer in a multiplication problem |
| Turnaround facts | the order of factors may be changed without changing the answer |
| arrray | an arrangement of items into a rectangular pattern of rows and columns |
| prime number | a number that is divisible only by itself and one |
| multiple | a number that is a product of a given whole number |
| exponent | a shortcut for writing repeated factors |
| square number | the product of two factors that are the same |
| column | the vertical placement of an array |
| row | the horizontal placement of an array |
| factor tree | a diagram that shows the prime factors of a composite number |