Matrix Addition and Scalar Multiplication

​Algebra 2

​More Matrix Operations

​Write the dimension of each matrix

​What element is A₂₃?

Math Response

In matrix B, which element is B₂₁

Type answer here

Correct Answer: 1

Deg^°

Rad

Multiple Choice

What is the dimension of matrix B?

• 3 x 2

• 2 x 3

• 3 x 3

• 2 x 2

​Adding & Subtracting Matrices

​To add matrices A and B with the same dimensions, adding corresponding elements

​You can only add matrices with the same dimensions

​Example 1: Find the sum

​+

Multiple Choice

Find the sum

​Example 2: Perform the operation

​If

​what is 5A?

Multiple Choice

What is 3A?