Addition of Matrices...

The first rule of adding matrices is:

1. In order to add two matrices they must be OF THE SAME SIZE

2. When adding two matrices of the same size, then the matrix's answer is of the same size as the additives.

3. If you are adding two matrices of different sizes, then the answer is undefined.

4. The size of the matrix is denoted by the amount of rows and columns it has. If a matrix has three rows (across) and four columns (down) then the measurements are 3x4, the rows are always listed first, whereas the columns are always second.

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Definition of Matrix Addition:

If A = C and B = D and the matrices are both 1x2,and you are adding matrix [A, B] to [C, D] then the answer is [A+C, B+D].

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For examples of adding matrices click HERE.

To practice adding matrices click HERE.

When finished doing the above problems, click HERE for the answers.


Just click the NEXT button to continue your lesson in matrices by learning how to subtract two matrices...


Or to return to main page, click HERE.

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Latest update to this document: 16 November 2001

Jessica Schneider: jeschnei@nmu.edu