7 Divisibility Rules

Front

What is the divisibility rule for 2?

Back

A whole number is divisible by 2 if its last digit is an even number (0, 2, 4, 6, or 8).

Front

What is the divisibility rule for 5?

Back

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

Front

What is the divisibility rule for 10?

Back

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

Front

What is the divisibility rule for 3?

Back

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

Front

Is 56 divisible by 2?

Back

Yes, because the last digit is 6, which is an even number.

Front

Is 130 divisible by 5?

Back

Yes, because the last digit is 0.

Front

Is 123 divisible by 3?

Back

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

Front

Which of these numbers is divisible by 2: 45, 82, 91?

Back

82, because its last digit is 2, which is even.

Front

What is the divisibility rule for 4?

Back

A whole number is divisible by 4 if the last two digits form a number that is divisible by 4.

Front

Is 124 divisible by 4?

Back

Yes, because the last two digits, 24, are divisible by 4.