1. F5 To do this activity you should:
Know how to write an integer number as a product of primes
Press to start F5

2. Starter
Which of these are Prime numbers? 17 8 5 5 5 5 9 11 11 4 1 13 13 13 13 13 13 13 7 7 7 7 7 15 2 27 25 3 3 3 3 3 19

3. BAT Find the HCF or LCM of two numbers
Prime product Bingo
Make a 5x5 grid and fill with prime numbers below 20 3 2 7 5 19 11 13
The teacher will call out numbers
write the number as a product of primes
Example: 10 = 2 x cross out 2 and 5

4. 15
3 x 5

5. 8
2 x 2 x 2

6. 38
2 x 19

7. 77
7 x 11

8. 26
2 x 13

9. 65
5 x 13

10. 57
3 x 19

11. 30
2 x 3 x 5

12. 143
11 x 13

13. 28
2 x 2 x 7

14. 68
2 x 2 x 17

15. 44
2 x 2 x 11

16. 125
5 x 5 x 5

17. 121
11 x 11

18. 169
13 x 13

19. 27
3 x 3 x 3

20. 45
3 x 3 x 5

21. 154
2 x 7 x 11

22. END