Divisibility Rules! Mr. Z version

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 3?

Back

A number is divisible by 3 if the sum of its digits is divisible by 3.

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 9?

Back

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

Front

What is the divisibility rule for 10?

Back

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

Front

Is 252 divisible by 9?

Back

Yes, because the sum of the digits (2+5+2=9) is a multiple of 9.

Front

Which of these numbers is divisible by 2: 68, 78, 72, 86?

Back

All of them are divisible by 2.

Front

Which of these numbers is divisible by 3: 68, 78, 72, 86?

Back

78 and 72 are divisible by 3.

Front

Which of these numbers is divisible by 6: 68, 78, 72, 86?

Back

72 is divisible by 6.

Front

What is an even number?

Back

An even number is any integer that is exactly divisible by 2.