Properties and Factors of Numbers

The video tutorial introduces a new unit focusing on factors, multiples, and common denominators. It begins with an explanation of factors using arrays, specifically focusing on the number 12. The tutorial then explores finding factors of various numbers using grids and solving word problems related to factors. It also covers properties of multiplication, such as the commutative property, and discusses divisibility rules and prime numbers.

What are the factors of 12?

• 1, 2, 3, 4, 6, 12

• 1, 2, 4, 6, 8, 12

• 1, 3, 4, 6, 9, 12

• 1, 2, 3, 5, 6, 12

How can five chairs be arranged using arrays?

• 1x4 and 4x1

• 1x5 and 5x1

• 2x3 and 3x2

• 2x5 and 5x2

What are the factors of 16?

• 1, 3, 5, 8, 16

• 1, 2, 4, 8, 16

• 1, 2, 3, 6, 16

• 1, 2, 4, 6, 16

Which of the following is a factor of 45?

• 7

• 8

• 6

• 5

What are the factors of 9?

• 1, 5, 9

• 1, 4, 9

• 1, 2, 9

• 1, 3, 9

Which number is a prime number?

• 30

• 27

• 25

• 23

What is the expanded form of 90,403?

• 90,000 + 400 + 3

• 90,000 + 40 + 3

• 90,000 + 4 + 3

• 90,000 + 400 + 30

What is the commutative property of multiplication?

• Distributing a number over addition

• Changing the order of numbers does not change the product

• Multiplying a number by itself

• Grouping numbers differently does not change the product

How many factors does the number 22 have?

• 4

• 3

• 6

• 5

Which numbers are divisible by 5?

• Numbers ending in 5 or 0

• Numbers ending in 3 or 6

• Numbers ending in 2 or 4

• Numbers ending in 1 or 9