How to manipulate MATRIX size

I have a 31 x 90 matrix, I want to add a zeros element all through to make it a 31 x 104. How can I achieve this?

Answer 1

[madhan ravi]

[Matrix,zeros(31,104-90)]

[olodyusuf]

How can I subtract a certain number, say 10 all through the row and column from 90 - 104?.

[andrea]

Matrix(:, 90:104)-10