Matrix Arithmetic: Addition, Subtraction, and Scalar Multiplication (VCE SSCE General Mathematics): Quizzes

Same order & identical corresponding elements

Only when they have the same order

$\begin{bmatrix} 3 & 5 \\ 3 & 2 \end{bmatrix}$

$6$

Multiply every element by a single number

$\begin{bmatrix} 6 & 3 \\ 0 & 12 \end{bmatrix}$

The zero matrix $O$

Both addition and subtraction

Increase in sales from 2014 to 2015

$1.5 = 1 + 0.5$, which is 100% + 50%