Adding and Subtracting Matrices

Front

What is a matrix?

Back

A matrix is a rectangular array of numbers arranged in rows and columns.

Front

What are the dimensions of a matrix?

Back

The dimensions of a matrix are given in the form 'rows x columns', indicating how many rows and how many columns it has.

Front

How do you add two matrices?

Back

To add two matrices, they must have the same dimensions. You add corresponding elements together.

Tags

CCSS.HSN.VM.C.8

Front

How do you subtract two matrices?

Back

To subtract two matrices, they must have the same dimensions. You subtract corresponding elements.

Tags

CCSS.HSN.VM.C.8

Front

What is the result of adding a 2x3 matrix and a 2x3 matrix?

Back

The result is another 2x3 matrix.

Tags

CCSS.HSN.VM.C.8

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Tags

CCSS.HSN.VM.C.8

Front

What is the value of element a23 in the matrix [[1, 2, 3], [4, 5, 6]]?

Back

The value of a23 is 5.

Front

How many rows are in a 4x5 matrix?

Back

There are 4 rows in a 4x5 matrix.

Front

How many columns are in a 3x2 matrix?

Back

There are 2 columns in a 3x2 matrix.

Front

What is the result of the matrix operation [[1, 2], [3, 4]] + [[5, 6], [7, 8]]?

Back

The result is [[6, 8], [10, 12]].

Tags

CCSS.HSN.VM.C.8