
Determinants of 3x3 Matrices

Interactive Video
•
Mathematics
•
8th - 10th 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 using expansion by minors?
Add all elements of the matrix
Multiply all elements of the matrix
Transpose the matrix
Calculate the determinant of a 2x2 matrix
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element is used first in the expansion by minors method?
The last element of the first row
The middle element of the second row
The last element of the last row
The first element of the first row
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What operation is performed after selecting the first element in the expansion by minors?
Division
Multiplication
Addition
Subtraction
Tags
CCSS.1.OA.A.1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example, what is the value of 'a' in the top row?
3
2
1
0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of the determinant calculation for the first minor matrix in the example?
0
-2
4
2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of 'B' in the example matrix?
0
3
-1
1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the determinant of the second minor matrix in the example?
-9
-8
0
1
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