Divisibility

Front

What is divisibility?

Back

Divisibility is the ability of one number to be divided by another number without leaving a remainder.

Front

Which numbers are divisible by 3?

Back

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

Front

Which numbers are divisible by 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 2?

Back

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

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 10?

Back

A number is divisible by 10 if it ends in 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 804 divisible by 3?

Back

Yes, because the sum of the digits (8+0+4=12) is divisible by 3.

Front

Is 9963 divisible by 9?

Back

Yes, because the sum of the digits (9+9+6+3=27) is divisible by 9.

Front

What numbers is 75 divisible by?

Back

75 is divisible by 3 and 5.