Addition Relates to Multiplication Lesson

The Array Model

During this lesson, you will learn how to use the array model to solve multiplication.

First, we have to learn what an array is!

An array is a set of numbers or objects placed in rows or columns to multiply or divide.

What is in array model?

• Arrays are used to represent multiplication or division

• The first factor shows how many rows

• The second factor shows how many columns

• Rows x columns = product

Today, we are going to learn how we can use repeated addition to solve arrays!​

​We have learned repeated addition with equal groups!

Multiple Choice

POP QUIZ: How many rows are shown on the array?

• 6 rows

• 2 rows

• 3 rows

• 8 rows

Multiple Choice

How many columns are shown in this array?

• 9

• 3

• 5

• 6

The equation is the same if you count by rows or by columns!

3+3+3

There is one!

Example of Array Model

How can I represent this array as a multiplication equation?

Remember: Rows x Columns

Multiple Choice

How can I represent this array model as a multiplication equation?

• 6 + 6 = 12

• 3 x 4 = 12

• 6 + 3 = 9

• 6 x 2 = 12

Multiple Choice

Aaron says that he arranged his star collection with 4 rows and 3 stars on each row . Which array model fits the description?

Open Ended

Represent this array as a multiplication equation.

Multiple Choice

Which sentence is correct?

• Rows go side to side, columns go side to side.

• Rows go up and down, columns go up and down.

• Rows go side to side, columns go up and down.

• Rows go up and down, columns go side to side.