Worksheet on basic matrix operations for Algebra 2 students, including addition, subtraction, and scalar multiplication of matrices.

1) $\begin{bmatrix} 3 & 5 \\ 5 & -3 \\ -3 & 2 \end{bmatrix}$

2) undefined

3) $\begin{bmatrix} -5 & -6 & 4 \\ -4 & 2 & 1 \end{bmatrix}$

4) $\begin{bmatrix} 3 & 0 \\ 0 & -5 \end{bmatrix}$

5) $\begin{bmatrix} 2 & -4 \end{bmatrix}$

6) $\begin{bmatrix} 8 \\ 6 \end{bmatrix}$

7) $\begin{bmatrix} -1 & 2 & 1 & -2 \end{bmatrix}$

8) $\begin{bmatrix} 10 & 2 \\ 2 & -4 \end{bmatrix}$

9) $\begin{bmatrix} -14u & -6w^2 & -10n & -10 \end{bmatrix}$

10) $\begin{bmatrix} 7 \\ 10 \end{bmatrix}$

11) $\begin{bmatrix} -4 \\ 3 \\ -5 \end{bmatrix}$

12) $\begin{bmatrix} -4n+4 & n+m-5 \\ -2n-4n & -4m+0 \end{bmatrix} = \begin{bmatrix} -4n+4 & n+m-5 \\ -6n & -4m \end{bmatrix}$