Number Theory

A _________ is a whole number with exactly two factors, 1 and itself.

• prime number

• common factor

• common multiple

• composite number

A number that is a multiple of two or more numbers is a ________ of those numbers.

• prime number

• Common Factor

• Common Multiple

• Composite number

A _______ is a whole number with more than two factors.

• prime number

• common factor

• common multiple

• composite number

What are the factors of 8?

• 1,2,4,8

• 8, 16, 24, 32...

What are the multiples of 9?

• 1, 3, 9

• 9, 18, 27, 36, 45...

The product of 3 x 4 is 12, so 3 and 4 are factors of 12.

• True

• False

The numbers 3 and 4 are the only factors of 12.

• True

• False

Every number except 0 is divisible by itself and 1.

• True

• False

A factor is always greater than the number itself.

• True

• False

One multiple of a number is the number itself.

• True

• False