Exploring Multiplication through Arrays

The video tutorial introduces the concept of arrays, explaining their structure using rows and columns. It guides students through creating an array model to solve multiplication problems, emphasizing the use of repeated addition and the commutative property. The tutorial provides practical examples and encourages students to practice multiplication sentences.

What is an array in the context of multiplication?

• A mathematical operation

• A single object

• A group of objects lined up in rows and columns

• A type of number

Tags

CCSS.3.OA.A.1

How does a row differ from a column?

• A row is a single object, a column is multiple objects

• A row goes up and down, a column goes left to right

• A row goes left to right, a column goes up and down

• A row is a type of number, a column is a type of operation

What does the word 'of' indicate in a multiplication problem?

• Multiplication

• Division

• Subtraction

• Addition

Tags

CCSS.5.NF.B.4A

How many rows and columns are created in the array model for 4 times 3?

• 6 rows and 2 columns

• 2 rows and 6 columns

• 4 rows and 3 columns

• 3 rows and 4 columns

Tags

CCSS.3.OA.A.1

What is the total number of objects in the array for 4 times 3?

• 11

• 13

• 10

• 12

Tags

CCSS.3.OA.A.1

What is the repeated addition sentence for 4 times 3?

• 3 + 3 + 3 + 3

• 5 + 5 + 5

• 4 + 4 + 4

• 2 + 2 + 2 + 2

Tags

CCSS.3.OA.A.1

How does repeated addition help in multiplication?

• It provides a faster way to find the product

• It changes the multiplication problem

• It makes the problem more complex

• It is not useful

Tags

CCSS.3.OA.A.1

What is the commutative property of multiplication?

• Changing the order of numbers changes the product

• It only applies to subtraction

• Changing the order of numbers does not change the product

• It only applies to addition

Tags

CCSS.3.OA.B.5

What is the product of 3 times 4 using the commutative property?

• 13

• 12

• 11

• 10

Tags

CCSS.3.OA.B.5

What is the multiplication sentence for 4 groups of 3?

• 4 times 3

• 3 + 3 + 3 + 3

• 4 + 4 + 4

• 3 times 4

Tags

CCSS.3.OA.A.1