Rules of Division

Front

What is the rule for determining if a number is divisible by 3?

Back

A number is divisible by 3 if the sum of its digits equals 3, 6, or 9.

Front

Which numbers are factors of a number that ends in 5 or 0?

Back

5 is a factor of any number that ends in 5 or 0.

Front

If 4 is a factor of a number, what can you say about that number if it is multiplied by an even number?

Back

The result must be a multiple of 8.

Front

What is the only even prime number?

Back

2 is the only even prime number.

Front

What is the rule for determining if a number is divisible by 2?

Back

A number is divisible by 2 if it is an even number.

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

What is the smallest factor of any number?

Back

1 is the smallest factor of any number.

Front

If a number is a multiple of 7, what can you say about its factors?

Back

7 is a factor of that number.

Front

What is the relationship between factors and divisibility?

Back

If a number is a factor of another number, it means the second number is divisible by the first.