Modeling Multiplication with Arrays

This video tutorial introduces the concept of arrays in grade three math, focusing on how arrays can be used to model multiplication and identify factors. It explains the arrangement of objects in rows and columns, and provides examples of different array configurations. The tutorial encourages using everyday objects like pennies or Legos to create arrays, reinforcing the understanding of multiplication through hands-on practice.

What is an array used for in multiplication?

• To divide numbers

• To model multiplication and find factors

• To subtract numbers

• To add numbers

Tags

CCSS.4.NBT.B.5

How are rows and columns arranged in an array?

• Both rows and columns go up and down

• Rows go across, columns go up and down

• Rows go up and down, columns go across

• Both rows and columns go across

Tags

CCSS.5.OA.B.3

What are factors in multiplication?

• Numbers that are multiplied together to get a product

• Numbers that are subtracted

• Numbers that are added together

• Numbers that are divided

Tags

CCSS.4.NBT.B.6

In the array 2 * 3, how many rows and columns are there?

• 3 rows and 3 columns

• 3 rows and 2 columns

• 2 rows and 2 columns

• 2 rows and 3 columns

Tags

CCSS.3.OA.A.1

What is the product of 3 rows and 2 columns?

• 5

• 6

• 8

• 7

Tags

CCSS.3.OA.A.1

How many rows and columns are in the array 2 * 5?

• 5 rows and 5 columns

• 2 rows and 5 columns

• 5 rows and 2 columns

• 2 rows and 2 columns

Tags

CCSS.3.OA.A.1

What is the product of 4 rows and 3 columns?

• 10

• 11

• 12

• 13

Tags

CCSS.3.OA.A.1

How many rows and columns are in the array 3 * 3?

• 3 rows and 2 columns

• 2 rows and 3 columns

• 3 rows and 3 columns

• 4 rows and 3 columns

Tags

CCSS.3.OA.A.1

What is the product of 2 rows and 7 columns?

• 14

• 13

• 12

• 15

Tags

CCSS.3.OA.A.1

What can you use to create arrays for multiplication practice?

• Books

• Pens

• Shoes

• Everyday objects like pennies, buttons, Legos, or crayons

Tags

CCSS.3.OA.A.1