Divisibility Rules

Front

What is the divisibility rule for 5?

Back

The last digit needs to be a 5 or 0.

Front

What is the divisibility rule for 6?

Back

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

Front

What is the divisibility rule for 3?

Back

Add up the digits. The sum must be a multiple of 3.

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).

Front

Is 1,284,604 divisible by 2?

Back

Yes, because 4 is an even number.

Front

Which of these numbers is divisible by 6: 6312 or 6313?

Back

6312 is divisible by 6.

Front

Which of these numbers is divisible by 2: 50808 or 50809?

Back

50808 is divisible by 2.

Front

What is the divisibility rule for 4?

Back

A number is divisible by 4 if the last two digits form a number that is divisible by 4.

Front

What is the divisibility rule for 8?

Back

A number is divisible by 8 if the last three digits form a number that is divisible by 8.

Front

What is the divisibility rule for 9?

Back

A number is divisible by 9 if the sum of its digits is a multiple of 9.