Arrays

Arrays are a visual way to demonstrate the multiplication of 2 whole numbers. Objects are drawn into rows and columns. To label an array, you write a number model. The number model is in this formula: 
Number of Rows X Number of Columns. 


Example:
x x x x
x x x x            5x4=20
x x x x
x x x x
x x x x

In the example above, there are 5 rows and 4 columns. The numbers 5 and 4 are called factors. Factors are two numbers multiplied together. The total amount or product in this example is 20. The product is the answer to a multiplication problem. 

Click here to see a video explaining arrays,.