Arrays of Multiplication

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Arrays of Multiplication
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Contents

In This 3rd Grade Video on Using Arrays for Multiplication…

Mr. Squeak's workshop has gotten very messy from all of his recent projects. It's time for him to organize his materials so that he knows where to find it all. However, they will need help organizing everything into tidy rows and columns. In this video, we are teaching multiplication using arrays to Mr. Squeaks and Imani.

What is an Array in Math Multiplication?

An array is a model that can be used to find the product, or total, of a multiplication problem. We use arrays to lay out multiplication problems in rows and columns. Then, we count the number of marks to find the product. This is how to multiply using arrays.

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You may see arrays in textbooks, worksheets and websites that are illustrated with symbols or pictures. But, when drawing your own array, it's normal to use x’s, dots, or circles.

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What Multiplication Facts can be Found by Using Arrays?

In theory, any multiplication fact can be found using arrays! However, you may be limited by the space required to draw out all the rows and columns depending on the fact. You find multiplication facts using arrays by looking at the expression.To start, look at the first factor in the expression and neatly draw the same number of rows. Then, look at the second factor and neatly put that number of marks on each rows Finally, count the total number of marks drawn to calculate the product. You can repeat this process of using arrays to show multiplication concepts.

How to Teach Multiplication Using Arrays

Using arrays to teach multiplication is simple. Pick a multiplication fact to model using arrays. We will use the fact two times three. To start, look at the first factor, two. Neatly draw two rows.

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Then, look at the second factor, three, and neatly make three circles on each of the two rows.

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Finally, count the total number of circles made to calculate the product. There are six circles in total. This means the multiplication fact two times three has a product of six. You can use this concept to solve multiplication worksheets using arrays.

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Summary of Steps: Using Arrays to Solve Multiplication Problems

Looking at the expression,

  • Begin by identifying the first factor.

  • Next, neatly draw that same number of rows.

  • Then, look at the second factor and neatly put that number of marks on each row.

  • Finally, count the total number of marks drawn to calculate the product.

Have you practiced yet? On this website, you can also find examples of multiplication using arrays on worksheets, activities, and exercises.