Whole numbers - Pre-lesson quiz 1 (Number system, Primes)

5 - 9 = ?

• 4

• -4

• 14

• -14

 $9\div0=$ 

• 9

• 0

• 1

• undefined

 $\sqrt{9}=\ -3$  

• True

• False

Which of the following numbers are NOT prime? 3,5,9,11,13,14,17

• 9

• 13

• 14

• 17

The HCF of 24 and 18 is...

(a)  

The LCM of 4 and 5 is...

(a)  

 $2000=2\times10^3$  

• True

• False

Is 24 a perfect square?

• Yes

• No

Is 64 a perfect cube?

• Yes

• No