Adding and subtracting matrices is such an important skill! Walking down the aisles of the supermarket just wouldn't be the same without the need to add and subtract a matrix or two. Hold on. Perhaps it's not important for day to day to life, but it is important in this General Maths course! The matrices module continues with the first of a series dealing with operations on matrices. This one looks at addition and subtraction of matrices. I look at the conditions which allow you to add and subtract matrices with a number of worked examples. All explanations are clear and easy to understand and delivered with my own quirky style.