Exercises: Understand Zero and Identity Matrices

Work through each section in order. Show your work where indicated.

Grade 9·19 problems·~30 min·Common Core Math - HS Number and Quantity·standard·hsn-vm-c-10

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Fluency Practice

Let $A = \begin{bmatrix}5 & -2\\3 & 7\end{bmatrix}$ and $O = \begin{bmatrix}0&0\\0&0\end{bmatrix}$ . What is $A + O$ ?

$\begin{bmatrix}0&0\\0&0\end{bmatrix}$

$\begin{bmatrix}5&-2\\3&7\end{bmatrix}$

$\begin{bmatrix}5&0\\0&7\end{bmatrix}$

$\begin{bmatrix}10&-4\\6&14\end{bmatrix}$