Find Determinant Formula (3x3) (Level 2)
This math topic focuses on finding the determinant of a 3x3 matrix by expanding the first row. Students are provided with several 3x3 matrices and are asked to select the correct determinant formula from multiple choices. Each question includes an array and several algebraic expressions representing potential solutions for the determinant calculation. This helps reinforce skills in matrix manipulation and determinant computation, important topics in the broader study of matrices.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
moreMatrices - Find Determinant Formula (3x3) Worksheet
| Math worksheet on 'Matrices - Find Determinant Formula (3x3) (Level 2)'. Part of a broader unit on 'Matrices' Learn online: app.mobius.academy/math/units/matrices/ |
1
![A LaTex expression showing \left[ {\begin{array} {ccc} 2 & 2 & 2 \\ 7 & 8 & 6 \\ 0 & 2 & 5 \end{array} } \right]](https://api.mobius.academy/storedimages/4057190/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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2
![A LaTex expression showing \left[ {\begin{array} {ccc} 7 & 0 & 1 \\ 1 & 6 & 7 \\ 3 & 9 & 4 \end{array} } \right]](https://api.mobius.academy/storedimages/4058946/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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3
![A LaTex expression showing \left[ {\begin{array} {ccc} 5 & 7 & 0 \\ 4 & 9 & 9 \\ 5 & 7 & 3 \end{array} } \right]](https://api.mobius.academy/storedimages/4057676/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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4
![A LaTex expression showing \left[ {\begin{array} {ccc} 5 & 1 & 7 \\ 7 & 1 & 3 \\ 1 & 4 & 7 \end{array} } \right]](https://api.mobius.academy/storedimages/4058426/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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f
5
![A LaTex expression showing \left[ {\begin{array} {ccc} 6 & 4 & 3 \\ 1 & 7 & 5 \\ 1 & 8 & 3 \end{array} } \right]](https://api.mobius.academy/storedimages/4057429/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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6
![A LaTex expression showing \left[ {\begin{array} {ccc} 2 & 3 & 9 \\ 3 & 2 & 2 \\ 1 & 1 & 3 \end{array} } \right]](https://api.mobius.academy/storedimages/4058945/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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7
![A LaTex expression showing \left[ {\begin{array} {ccc} 8 & 9 & 3 \\ 6 & 2 & 6 \\ 9 & 4 & 0 \end{array} } \right]](https://api.mobius.academy/storedimages/4058167/render)
| Choose the correct formula for the determinant of this matrix based on expanding the first row |
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