
Calculating Determinants of Matrices

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard
Standards-aligned

Amelia Wright
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding the determinant of a 3x3 matrix?
Form 2x2 matrices by eliminating rows and columns
Multiply all elements together
Add all elements together
Transpose the matrix
Tags
CCSS.HSA.REI.C.9
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When forming a 2x2 matrix from a 3x3 matrix, what do you do with the row and column of the selected element?
Add them together
Transpose them
Multiply them
Eliminate them
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the determinant of a 2x2 matrix?
Add the diagonals
Subtract the product of the diagonals
Multiply the diagonals
Divide the diagonals
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the first example, what is the determinant of the 3x3 matrix?
377
-377
737
-737
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What operation is performed after calculating the determinants of the 2x2 matrices in a 3x3 matrix?
Multiply them
Subtract them
Add them together
Combine them with alternating signs
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the importance of checking your work when calculating determinants?
To ensure the matrix is correct
To make the process faster
To avoid mistakes that lead to incorrect answers
To simplify the matrix
Tags
CCSS.7.NS.A.2A
CCSS.7.NS.A.2B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do if you encounter two negative signs in a calculation?
Multiply them
Ignore them
Add them
Turn them into a positive sign
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