Divisibility rules

Front

What is the divisibility rule for 3?

Back

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

Front

Which of the following is an even number? 1, 9, 4, 5

Back

4

Front

How do you know if a number is divisible by 12?

Back

If it is divisible by 3 and 4.

Front

How do you know if a number is divisible by 8?

Back

If the last 3 digits is divisible by 8.

Front

A number is divisible by 10 if it ends in what?

Back

It ends in 0.

Front

What is an even number?

Back

A number that can be divided by 2 without a remainder.

Front

What is an odd number?

Back

A number that cannot be divided by 2 evenly.

Front

What is the divisibility rule for 5?

Back

A number is divisible by 5 if it ends in 0 or 5.

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if it is even.

Front

How do you know if a number is divisible by 4?

Back

If the last 2 digits form a number that is divisible by 4.