L5 Name that number!

I am the square root of 64.

What am I ?

• 6

• 7

• 8

• 9

I am a common multiple of 12 and 16 below 50.

• 24

• 36

• 32

• 48

My factors are myself and 1, 2 and 9 and 3 and 6.

What number am I ?

• 12

• 16

• 17

• 18

I am a prime number below 20. I have two factors - myself and 1.

You can find me if you add the first prime number and 3 x 5. What am I?

• 12

• 17

• 15

• 16

I am the HCF of 18 and 24.

• 9

• 6

• 12

• 8

I am the lowest common multiple of 6 and 8.

• 16

• 18

• 24

• 48

I am the 5th prime number.

• 13

• 11

• 7

• 5

I am the highest common factor of 30 and 45.

• 10

• 12

• 30

• 15

I am a common multiple of 9 and 3 above 20.

• 21

• 24

• 27

• 30

My factors are myself and 1. 6, 3, 12, 4 and 9, 2 and 18.

What number am I?

• 24

• 36

• 32

• 28