Choose from the following list of words to complete each statement. Words may be used more than once or not at all. \

$$\begin{array}{llll} \text{add} & \text{identity} & \text{like} & \text{negative}\\ \text{positive} & \text{subtract} & \text{zero} \\ \end{array}$$

To add $-1+8,\ \underline{\qquad \qquad \qquad}$ $1$ from $8$ and make the answer $\underline{\qquad \qquad \qquad}$.

Write an algebraic expression: Nine less than the product of two numbers.

Choose from the following list of words to complete each statement. Not every word will be used. \

$$\begin{array}{ll}\text { associative } & \text { factors } \\ \text { commutative } & \text { product } \\ \text { distributive } & \text { sum } \\ \text { equivalent } & \text { terms } \end{array}$$

Changing the order of multiplication does not affect the answer. This is an example of a(n) $\underline{\qquad \qquad \qquad}$ law.