Exploring Multiplication with Arrays

This video tutorial by Larry from Tutoring Hour introduces the concept of arrays in multiplication. It begins with a simple example using donuts arranged in rows and columns, explaining how to count objects using multiplication. The tutorial progresses to demonstrate the commutative property of multiplication with apples, showing that changing the order of factors does not affect the product. Real-life examples, such as saplings and bikes, further illustrate the concept. The video concludes with a final example using a carton of eggs, encouraging viewers to explore arrays in their surroundings.

What is an array?

• A computer programming term only

• Objects arranged in rows and columns

• A mathematical formula

• A type of fruit

Tags

CCSS.3.OA.A.1

How many donuts were there in the first example?

• 3

• 6

• 24

• 12

Tags

CCSS.2.OA.C.4

How many apples were in the array created for 3 times 4?

• 7

• 12

• 20

• 15

Tags

CCSS.3.OA.A.1

What does the commutative property of multiplication state?

• The product of any number and one is that number

• Multiplying numbers in any order changes the product

• The product of any number and zero is zero

• Multiplying numbers in any order does not change the product

Tags

CCSS.3.OA.B.5

Which example demonstrated the commutative property?

• Eggs

• Donuts

• Apples

• Saplings

Tags

CCSS.1.OA.B.3

How many saplings were there?

• 10

• 15

• 20

• 25

Tags

CCSS.1.NBT.A.1

What is the product of 5 times 10?

• 150

• 100

• 50

• 15

Tags

CCSS.3.NBT.A.3

What was the total number of bikes?

• 25

• 40

• 60

• 50

Tags

CCSS.1.NBT.A.1

How many eggs were in the carton?

• 10

• 18

• 15

• 12

Tags

CCSS.1.NBT.A.1

Where can you practice more multiplication problems?

• www.learnmath.com

• www.mathfun.com

• www.arrayworld.com

• www.tutoringhour.com