An interactive maths quiz designed for use with Qwizdom Interactive Voting Systems

1. Prime Numbers Year 9 Qwizdom

2. Find the prime! 10 15 6 8 5

3. Find the prime! 25 13 12 18 100

4. Find the prime! 2 4 6 8 10

5. Find the prime! 33 22 35 50 7

6. Find the prime! 81 17 49 144 1000

7. True or False? 1 is a prime number

8. What’s the missing prime factor?

9. What’s the missing prime factor?

10. Which is the product of prime factors for 50? 5 x 10 = 50 5 x 2 x 2 x 5 = 50 5 x 5 x 2 = 50 25 x 2 = 50

11. Which is the product of prime factors for 81? 9 x 9 = 81 3 x 3 x 3 = 81 3 x 3 x 3 x 3 = 81 8 x 1 = 81

12. Which is the product of prime factors for 28? 2 x 2 x 7 = 28 7 x 4 = 28 14 x 2 = 28 3 x 2 x 3 = 28

13. What is the common factor of 10 and 14? 2 x 5 = 10 2 x 7 = 14

14. What is the common factor of 15 and 18? 3 x 5 = 15 3 x 3 x 2 = 18

15. What is the HIGHEST common factor of 20 and 30? 2 x 2 x 5 = 20 3 x 2 x 5 = 30

16. What is the HIGHEST common factor of 12 and 18? 2 x 2 x 3 = 12 2 x 3 x 3 = 18

17. What is the HIGHEST common factor of 9 and 18? 3 x 3 = 9 3 x 3 x 2 = 18