Factors, Multiples & Primes

What are the first five multiples of 7

• 0, 14, 21, 28, 42

• 7, 14, 21, 28, 35

• 1, 7, 14, 28, 56

• 0, 1, 7, 14, 49

What is the only multiple of 11 between 30 and 40?

• 31

• 32

• 33

• 34

One is a prime number...

• True

• False

Multiples of 2 are all the numbers in its times table...

• True

• False

The lowest common multiple of 5 and 6 is...

• 10

• 12

• 30

• 50

The factors of 15 are...

• 1, 3, 5

• 0, 5, 3

• 1, 15

• 1, 3, 5, 15

The highest common factor of 15 and 21 is...

• 5

• 3

• 2

• 1

The factors of 2 are...

• 1 and 2

• 1

• 0

• 2

11 is a prime number...

• True

• False

Composite numbers have more than two factors. For example, the number 10 is a composite number because it has factors 1, 2, 5 and 10...

• True

• False