Divisibility Rules

What is the divisibility rule for 2?

• The divisibility rule for 2 is that a number is divisible by 2 if its last digit is even.

• A number is divisible by 2 if its first digit is even.

• A number is divisible by 2 if its last digit is odd.

• A number is divisible by 2 if it is a prime number.

What is the divisibility rule for 3?

• The divisibility rule for 3 is to multiply all the digits of the number and check if the product is divisible by 3.

• The divisibility rule for 3 is to add up all the digits of the number and check if the sum is divisible by 3.

• The divisibility rule for 3 is to subtract the sum of the digits of the number from the number itself and check if the result is divisible by 3.

• The divisibility rule for 3 is to divide the number by 3 and check if the quotient is an integer.

What is the divisibility rule for 4?

• The divisibility rule for 4 is that a number is divisible by 4 if the sum of its digits is a multiple of 4.

• The divisibility rule for 4 is that a number is divisible by 4 if its last digit is 4.

• The divisibility rule for 4 is that a number is divisible by 4 if it is even.

• The divisibility rule for 4 is that a number is divisible by 4 if its last two digits form a multiple of 4.

What is the divisibility rule for 5?

• The number is divisible by 2.

• The number is divisible by 10.

• Units digit is either 1 or 6.

• Units digit is either 0 or 5.

What is the divisibility rule for 6?

• A number is divisible by 6 if it is divisible by 4 and 3.

• A number is divisible by 6 if it is divisible by 2 or 3.

• A number is divisible by 6 if it is divisible by 5 and 3.

• A number is divisible by 6 if it is divisible by both 2 and 3.

What is the divisibility rule for 7?

• Double the last digit and subtract it from the remaining truncated number. If the result is divisible by 7, then the original number is also divisible by 7.

• Add the digits of the number. If the sum is divisible by 7, then the original number is also divisible by 7.

• Multiply the last digit by 3 and subtract it from the remaining truncated number. If the result is divisible by 7, then the original number is also divisible by 7.

• Divide the number by 7. If the result is an integer, then the original number is divisible by 7.

What is the divisibility rule for 8?

• The divisibility rule for 8 is that a number is divisible by 8 if its last digit is even.

• The divisibility rule for 8 is that a number is divisible by 8 if its last four digits form a multiple of 8.

• The divisibility rule for 8 is that a number is divisible by 8 if its last three digits form a multiple of 8.

• The divisibility rule for 8 is that a number is divisible by 8 if its last two digits form a multiple of 8.

What is the divisibility rule for 9?

• The divisibility rule for 9 is to multiply the digits of the number and check if the product is divisible by 9.

• The divisibility rule for 9 is to subtract the sum of the digits of the number from 9 and check if the result is divisible by 9.

• The divisibility rule for 9 is to divide the number by 9 and check if the quotient is an integer.

• The divisibility rule for 9 is to add up all the digits of the number and check if the sum is divisible by 9.

What is the divisibility rule for 10?

• Last digit is 0

• Last digit is 9

• Last digit is 5

• Last digit is 1

What is the divisibility rule for 11?

• Divide the sum of the digits in odd positions by 11 and subtract the sum of the digits in even positions. If the result is divisible by 11, then the original number is also divisible by 11.

• Divide the sum of the digits in even positions by 11 and add the sum of the digits in odd positions.

• Divide the sum of the digits in odd positions by 11 and add the sum of the digits in even positions.

• Divide the sum of the digits in even positions by 11 and subtract the sum of the digits in odd positions.