CCSS HSN-VM.C.9 Worksheets
Year 11 · Vector & Matrix Quantities
Understand that, unlike multiplication of numbers, matrix multiplication of square matrices is not commutative, though it is still associative and distributive.
Below are free printable worksheets that support HSN-VM.C.9. Print them as PDFs, or generate a fresh one. Every math answer key is computed in code, so it is never wrong.
Teaching guide
What students learn
Understand that, unlike multiplication of numbers, matrix multiplication of square matrices is not commutative, though it is still associative and distributive.
Worked example
Matrix A has order 3 x 4 and matrix B has order 4 x 2. State the order of the product AB.
Answer: 3 x 2
Why: The inner dimensions match (4 = 4), so AB exists and takes the outer dimensions: 3 x 2.
Generated and checked in code, so it is correct.