Exploring Factors and Multiples in Pre-Algebra

The video tutorial explains how to determine if a number is a factor of 154 by checking divisibility. It covers divisibility rules for numbers like 3, 5, 6, and 9, and confirms that 14 is a factor of 154. The tutorial also explores finding multiples of 14, identifying 70 as a multiple. The video provides a step-by-step approach to understanding factors and multiples, using both divisibility rules and direct division methods.

Which of the following is not a correct method to check divisibility by 3?

• Dividing the number by 3

• Adding the digits of the number

• Multiplying the digits by 3

• Checking if the sum of digits is divisible by 3

Which number is not a factor of 154?

• 11

• 7

• 14

• 3

What indicates that a number is divisible by 5?

• It ends in 2 or 7

• It is a prime number

• It ends in 5 or 0

• It is an even number

What is the result of dividing 154 by 5?

• 31 with remainder 4

• 30 with remainder 4

• 31 with no remainder

• 30 with no remainder

Why can 6 not be a factor of 154?

• 154 is divisible by 2

• 154 is not divisible by 3

• 154 is divisible by 3

• 154 is not divisible by 2

If a number is divisible by 9, it must also be divisible by which other number?

• 3

• 6

• 2

• 5

What is the correct division of 154 by 14?

• 11 with remainder 2

• 12 with remainder 2

• 10 with remainder 4

• 11 with no remainder

Which of these is a multiple of 14?

• 55

• 42

• 60

• 75

What is the result of 14 times 2?

• 26

• 22

• 28

• 24

What is 14 times 5?

• 75

• 65

• 70

• 60