Divisibility Rules

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if it is even (ends in 0, 2, 4, 6, or 8).

Front

Is 24 divisible by 3?

Back

Yes, because the sum of the digits (2 + 4 = 6) is divisible by 3.

Front

What is the divisibility rule for 5?

Back

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

Front

Is 45 divisible by 9?

Back

Yes, because the sum of the digits (4 + 5 = 9) is divisible by 9.

Front

What is the divisibility rule for 10?

Back

A number is divisible by 10 if it ends in 0.

Front

Is 56 divisible by 4?

Back

Yes, because the last two digits (56) are divisible by 4.

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 72 divisible by 6?

Back

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

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 81 divisible by 9?

Back

Yes, because the sum of the digits (8 + 1 = 9) is divisible by 9.