# E-Math: How To Multiply Matrix (Know Your Rs & Cs)

Another important Tip for students taking GCE O Level Elementary Mathe (E-Math):

Unlike multiplication of numbers, multiplication of matrix requires some prep work.

1. First, you have to check the feasibility of the 2 Matrices which you are multiplying together. You must know the order of each matrix i.e Number of Rows x Number of Columns (I always call it RC, Resident Committee, Remote Control etc...)

I am using the following question to illustrate How To Multiply Matrix step by step.

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### Ai Ling Ong

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)

### 4 Responses to E-Math: How To Multiply Matrix (Know Your Rs & Cs)

1. Eric says:

Very interesting way of showing Matrix.

So much better than what my boring teacher is doing in class.

My tuition teacher only ask me to do assessment books that my mum boughts. My friend say this chapter is easy when we understand it. But i just dont get it untill now.

Thanks for showing it so clearly.

Wonder if your weekly LEAP programme will go through Matrix?

Eric

2. [...] Though order of Matrix is a rather small part of the chapter, it is still essential that you know how to list down the order of any matrix which will be used in operation of matrix.(Especially multiplication of matrix) [...]

3. matumbures says:

that is a fantastic explanation.