addition property of 0 | The sum of any number and 0 is equal to that number. The number 0 is often called the additive identity. |
associative law of addition | For three or more numbers, the sum is the same regardless of how you group the numbers. For example, (6 + 2) + 1 = 6 + (2 + 1). |
associative law of multiplication | For three or more numbers, the product is the same regardless of how you group the numbers. For example, 3 • (5 • 7) = 3 • (5 • 7). |
commutative law of addition | Two numbers can be added in any order without changing the sum. For example, 6 + 4 = 4 + 6. |
commutative law of multiplication | Two numbers can be multiplied in any order without changing the product. For example, 8 • 9 = 9 • 8. |
multiplication property of 1 | The product of any number and 1 is equal to that number. The number 1 is often called the multiplicative identity. |