Exercises: Add, Subtract, and Multiply Matrices

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

Grade 9·20 problems·~35 min·Common Core Math - HS Number and Quantity·standard·hsn-vm-c-8

Work through problems with immediate feedback

Recall / Warm-Up

Which condition is required to add matrices $A$ and $B$ ?

A and B must both be square.

A and B must have identical dimensions (same number of rows and same number of columns).

The number of columns of A must equal the number of rows of B.

A and B must have the same number of entries but can have different shapes.