Divisibility Rules for 4,8, 11, and 12

What is the divisibility rule for 4?

• The sum of the digits must be a multiple of 4

• The last two digits must form a number that is a multiple of 4

• 
  The number must be divisible by 2 and 3.

How do you know if a number is divisible by 12?

• If it ends in 3, 6, or 9

• If it is divisible by 3 and 4

• 
  If it is divisible by 2 or 3

All of the following numbers are divisible by 3 EXCEPT

• 4 512

• 21 111

• 111 001

Which of the following numbers is NOT divisible by 4?

• 52 311

• 23 304

• 12 320

How do you know if a number is divisible by 8?

• If the last 3 digits is divisible by 8

• If the last digit is an 8

• If the number is an even number

Which of the following numbers is NOT divisible by 4?

• 5740

• 2024

• 
  1566

The sum of the digits in the odd places and the sum of the digits in the even places are equal or their difference is a multiple of the number

• 
  Divisible by 11

• Divisible by 4

• Divisible by 8

Which of these numbers is divisible by 11?

• 1530

• 
  20824

• 
  8470803

Which number below is divisible by 12?

• 904

• 
  348

• 522

Is 762 498 divisible by 11?

• Yes

• Maybe

• No