Divisibility Tests

What is the divisibility rule for 2?

• Last digit is odd

• Number is a prime

• Sum of digits is divisible by 2

• Last digit is even

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 3?

• Check if the number ends with 3 or 6.

• Multiply the number by 3 and check if the result is a whole number.

• Subtract the number by 3 and check if the result is divisible by 3.

• Add up all the digits of the number and check if the sum is divisible by 3.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 4?

• The divisibility rule for 4 is to check if the number formed by the last two digits is divisible by 4.

• The divisibility rule for 4 is to check if the number is even

• The divisibility rule for 4 is to check if the number is a prime number

• The divisibility rule for 4 is to check if the number formed by the last three digits is divisible by 4

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 5?

• The last digit of the number must be 0 or 5.

• The sum of the digits must be divisible by 5

• The number must end in 5 or 0

• The number must be odd

Tags

CCSS.5.OA.B.3

What is the divisibility rule for 6?

• Divisible by both 2 and 3

• Divisible by 5

• Divisible by 7

• Divisible by 4

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 8?

• The divisibility rule for 8 is that the number must be even

• The divisibility rule for 8 is that the number formed by the last three digits of the given number must be divisible by 8.

• The divisibility rule for 8 is that the number must end in 8 or 0

• The divisibility rule for 8 is that the sum of the digits must be divisible by 8

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 9?

• Add up all the digits of the number and check if the sum is divisible by 9.

• Check if the number is even.

• Multiply the number by 9 and check if the result is a whole number.

• Subtract the number by 9 and check if the result is 0.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 11?

• The sum of the alternate digits must be divisible by 11

• The number must be a prime number

• The number must end in 1

• The difference between the sum of the odd-positioned digits and the sum of the even-positioned digits must be divisible by 11

Tags

CCSS.3.OA.D.9

Which of the following numbers is NOT divisible by 4?

• 1000
• 1566
• 5740
• 2024

Tags

CCSS.4.OA.B.4

All of these numbers are divisible by 5 except for...

• 75,395
• 984,940
• 222,222,235
• 8,943,892

Tags

CCSS.4.OA.B.4