Divisibility rules

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

What is the divisibility rule for 5?

Back

A number is divisible by 5 if its last digit is 0 or 5.

Front

What is the divisibility rule for 10?

Back

A number is divisible by 10 if its last digit is 0.

Front

What is the divisibility rule for 3?

Back

Add up the digits. The sum must be divisible by 3.

Front

Is 24 divisible by 6?

Back

Yes, because 24 is divisible by both 2 and 3.

Front

Is 45 divisible by 5?

Back

Yes, because the last digit is 5.

Front

Is 100 divisible by 10?

Back

Yes, because the last digit is 0.

Front

Which of these numbers is divisible by 2? 15, 22, 37, 41

Back

22, because it ends with an even digit.

Front

Which of these numbers is divisible by 5? 23, 45, 67, 89

Back

45, because it ends with a 5.

Front

Which of these numbers is divisible by 10? 30, 44, 55, 78

Back

30, because it ends with a 0.