Divisibility Rules

Front

What is a divisibility rule?

Back

A rule that helps determine if one number can be divided by another without leaving a remainder.

Front

Which numbers are used to check divisibility by 2?

Back

Any even number (ending in 0, 2, 4, 6, or 8) is divisible by 2.

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

How can you tell if a number is divisible by 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

Is 30,260 divisible by 3?

Back

No, because the sum of the digits (3+0+2+6+0=11) is not divisible by 3.

Front

Is 2,385 divisible by 10?

Back

No, because it does not end in 0.

Front

Is 202,470 divisible by 2?

Back

Yes, because it ends in 0.

Front

Every number is divisible by which number?

Back

1.

Front

Is 848,960 divisible by 10?

Back

Yes, because it ends in 0.