Rules of Divisibility

Front

What is the divisibility rule of 2?

Back

The last digit is even.

Front

What is the divisibility rule of 3?

Back

The sum of the digits is divisible by 3.

Front

What is the divisibility rule of 4?

Back

The last two digits form a number that is divisible by 4.

Front

What is the divisibility rule of 5?

Back

The last digit is 0 or 5.

Front

What is the divisibility rule of 6?

Back

The number is divisible by both 2 and 3.

Front

What is the divisibility rule of 9?

Back

The sum of the digits is a number divisible by 9.

Front

What is the divisibility rule of 10?

Back

The last digit is 0.

Front

Is 64 divisible by 2?

Back

Yes.

Front

Is 45 divisible by 3?

Back

Yes, because 4 + 5 = 9, which is divisible by 3.

Front

Is 100 divisible by 4?

Back

Yes, because the last two digits (00) form a number that is divisible by 4.