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Diketahui matriks A, B:
[tex]A=\left[\begin{array}{cc}1&0\\0&1\end{array}\right]B=\left[\begin{array}{cc}4&3\\5&2\end{array}\right][/tex]
Maka, operasi matriks A×B adalah
A =   B =
1 0   4 3
0 1   5 2

A x B =
1x4+0x5 1x3+0x3
0x4+1x5 0x5+1x2

A x B =
4+0 3+0
0+5 0+2

A x B =
4 3
5 2


[tex]AB=\left[\begin{array}{cc}4&3\\5&2\end{array}\right][/tex]

Hasilnya tetap seperti matriks B.