ACT Math : How to add matrices

Study concepts, example questions & explanations for ACT Math

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Example Questions

Example Question #16 : Matrices

Simplify:

Possible Answers:

Correct answer:

Explanation:

Matrix addition is very easy! All that you need to do is add each correlative member to each other. Think of it like this:

Now, just simplify:

There is your answer!

Example Question #4 : Matrices

Simplify:

Possible Answers:

Correct answer:

Explanation:

Matrix addition is really easy—don't overthink it! All you need to do is combine the two matrices in a one-to-one manner for each index:

Then, just simplify all of those simple additions and subtractions:

Example Question #2577 : Act Math

What is the value of 

 ?

Possible Answers:

You cannot add these two matrices because their indices do not line up.

Correct answer:

Explanation:

To add matrices you simply add the numbers in the same position as each other.

  

Plugging the given values into the above formula, we are able to solve the question.

   

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