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

Is 24 divisible by 2?

Back

Yes

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

Is 123 divisible by 3?

Back

Yes, because 1 + 2 + 3 = 6, which is divisible by 3.

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

Is 312 divisible by 4?

Back

Yes, because 12 (the last two digits) is divisible by 4.

Front

What is the divisibility rule for 5?

Back

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

Front

Is 70 divisible by 5?

Back

Yes, because the last digit is 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

Is 18 divisible by 6?

Back

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