Divisibility Rules 1

The video tutorial explains divisibility rules for numbers 2, 3, 4, 5, 6, 8, 9, 10, and 11 using examples. It highlights patterns in digits and sums to determine divisibility, providing practical applications through scenarios involving fish and shrimp distribution.

What is a key indicator that a number is divisible by 10?

• It is a prime number

• It is an even number

• It ends in 0

• It ends in 5

Which of the following numbers is divisible by 5?

• 23

• 42

• 55

• 67

A number is divisible by 2 if it has which of the following digits in the ones place?

• 5

• 8

• 3

• 1

How can you determine if a number is divisible by 3?

• The sum of its digits is a multiple of 3

• It is an odd number

• It is a prime number

• The number ends in 3

What is the rule for checking if a number is divisible by 4?

• It is an even number

• The sum of its digits is 4

• The last two digits form a number divisible by 4

• The number ends in 4

For a number to be divisible by 6, it must be divisible by which two numbers?

• 4 and 5

• 3 and 4

• 2 and 3

• 5 and 6

How can you check if a number is divisible by 8?

• The last three digits form a number divisible by 8

• The number ends in 8

• The sum of its digits is 8

• It is a multiple of 4

What is the rule for checking divisibility by 9?

• It is an odd number

• It is a multiple of 3

• The sum of its digits is a multiple of 9

• The number ends in 9

To check if a number is divisible by 11, what should you calculate?

• The sum of all digits

• The number of even digits

• The difference between the sum of digits at odd and even places

• The product of its digits

Which of the following numbers is divisible by 11?

• 121

• 135

• 123

• 130