**Adding Matrices **

Matrices add in the natural way:

Example:

**Multiplying Matrices **

Multiplying is a little more complex. Remember that you multiply rows by columns.

Example:

**Determinants of Matrices **

To find the determinant of a matrix multiply diagonal corners together and subtract.

Example:

** Inverses of Matrices **

Each entry in the matrix can be divided byin the natural way. An example is shown below