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# Qwizdom - Year9primes

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

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### Qwizdom - Year9primes

1. 1. Prime Numbers<br />Year 9 Qwizdom<br />
2. 2. Find the prime!<br />10<br />15<br />6<br />8<br />5<br />
3. 3. Find the prime!<br />25<br />13<br />12<br />18<br />100<br />
4. 4. Find the prime!<br />2<br />4<br />6<br />8<br />10<br />
5. 5. Find the prime!<br />33<br />22<br />35<br />50<br />7<br />
6. 6. Find the prime!<br />81<br />17<br />49<br />144<br />1000<br />
7. 7. True or False?<br />1 is a prime number<br />
8. 8. What’s the missing prime factor?<br />
9. 9. What’s the missing prime factor?<br />
10. 10. Which is the product of prime factors for 50?<br />5 x 10 = 50<br />5 x 2 x 2 x 5 = 50<br />5 x 5 x 2 = 50<br />25 x 2 = 50<br />
11. 11. Which is the product of prime factors for 81?<br />9 x 9 = 81<br />3 x 3 x 3 = 81<br />3 x 3 x 3 x 3 = 81<br />8 x 1 = 81<br />
12. 12. Which is the product of prime factors for 28?<br />2 x 2 x 7 = 28<br />7 x 4 = 28<br />14 x 2 = 28<br />3 x 2 x 3 = 28<br />
13. 13. What is the common factor of 10 and 14?<br />2 x 5 = 10<br />2 x 7 = 14<br />
14. 14. What is the common factor of 15 and 18?<br />3 x 5 = 15<br />3 x 3 x 2 = 18<br />
15. 15. What is the HIGHEST common factor of 20 and 30?<br />2 x 2 x 5 = 20<br />3 x 2 x 5 = 30<br />
16. 16. What is the HIGHEST common factor of 12 and 18?<br />2 x 2 x 3 = 12<br />2 x 3 x 3 = 18<br />
17. 17. What is the HIGHEST common factor of 9 and 18?<br />3 x 3 = 9<br />3 x 3 x 2 = 18<br />