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# 7-4 Common Multiples and LCM

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• TRUE...MISTAKES

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• on slide 14 the lcm of 6 and 4 is 12 not 24...and on the same slide its written'which is the common multiple' infact it should be which are the common multiples bec 12 and 24 both are the common multiples...mistakes

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• These slides are all messed up. Instead of LCM they say GCF. On slide 18 60 is not a mulitple of 60. There are many more mistakes

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• ### 7-4 Common Multiples and LCM

1. 1. 7-4 Common Multiples and LCM Math Notes Number Sense 2.4
2. 2. Example Find the Least Common Multiple (GCF) of 4 and 6.
3. 3. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP ONE: List the MULTIPLES of 4.
4. 4. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP ONE: List the MULTIPLES of 4. 4:
5. 5. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP ONE: List the MULTIPLES of 4. 4: 4,8,12,16,20,24,28
6. 6. Example Find the Least Common Multiple (GCF) of 4 and 6. 4: 4,8,12,16,20,24,28
7. 7. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP TWO: List the MULTIPLES of 6. 4: 4,8,12,16,20,24,28
8. 8. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP TWO: List the MULTIPLES of 6. 4: 4,8,12,16,20,24,28 6:
9. 9. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP TWO: List the MULTIPLES of 6. 4: 4,8,12,16,20,24,28 6: 6,12,18,24,30,36
10. 10. Example Find the Least Common Multiple (GCF) of 4 and 6. 4: 4,8,12,16,20,24,28 6: 6,12,18,24,30,36
11. 11. Example Find the Least Common Multiple (GCF) of 4 and 6. STEP THREE: Find the common multiples in both list. 4: 4,8,12,16,20,24,28 6: 6,12,18,24,30,36
12. 12. Example Find the Least Common Multiple (GCF) of 4 and 6. 4: 4,8,12,16,20,24,28 6: 6,12,18,24,30,36
13. 13. Example Find the Least Common Multiple (GCF) of 4 and 6. 4: 4,8,12,16,20,24,28 6: 6,12,18,24,30,36 Which is the common multiple?
14. 14. Example Find the Least Common Multiple (GCF) of 4 and 6. 4: 4,8,12,16,20,24,28 6: 6,12,18,24,30,36 Which is the LCM is 24 common multiple?
15. 15. Example Find the Least Common Multiple (GCF) of 9 and 15.
16. 16. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP ONE: List the MULTIPLES of 9.
17. 17. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP ONE: List the MULTIPLES of 9. 9:
18. 18. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP ONE: List the MULTIPLES of 9. 9: 9,18,27,36,45,54,60
19. 19. Example Find the Least Common Multiple (GCF) of 9 and 15. 9: 9,18,27,36,45,54,60
20. 20. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP TWO: List the MULTIPLES of 15. 9: 9,18,27,36,45,54,60
21. 21. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP TWO: List the MULTIPLES of 15. 9: 9,18,27,36,45,54,60 15:
22. 22. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP TWO: List the MULTIPLES of 15. 9: 9,18,27,36,45,54,60 15: 15,30,45,60,75,90
23. 23. Example Find the Least Common Multiple (GCF) of 9 and 15. 9: 9,18,27,36,45,54,60 15: 15,30,45,60,75,90
24. 24. Example Find the Least Common Multiple (GCF) of 9 and 15. STEP THREE: Find the common multiples in both list. 9: 9,18,27,36,45,54,60 15: 15,30,45,60,75,90
25. 25. Example Find the Least Common Multiple (GCF) of 9 and 15. 9: 9,18,27,36,45,54,60 15: 15,30,45,60,75,90
26. 26. Example Find the Least Common Multiple (GCF) of 9 and 15. 9: 9,18,27,36,45,54,60 15: 15,30,45,60,75,90 Which is the common multiple?
27. 27. Example Find the Least Common Multiple (GCF) of 9 and 15. 9: 9,18,27,36,45,54,60 15: 15,30,45,60,75,90 Which is the LCM is 45 common multiple?
28. 28. Example Find the Least Common Multiple (LCM) of 8, 10, and 40.
29. 29. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP ONE: List the multiples of 8.
30. 30. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP ONE: List the multiples of 8. 8:
31. 31. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP ONE: List the multiples of 8. 8: 8,16,24,32,40,48,56
32. 32. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. 8: 8,16,24,32,40,48,56
33. 33. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP TWO: List the multiples of 10. 8: 8,16,24,32,40,48,56
34. 34. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP TWO: List the multiples of 10. 8: 8,16,24,32,40,48,56 10:
35. 35. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP TWO: List the multiples of 10. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70
36. 36. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70
37. 37. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP THREE: List the multiples of 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70
38. 38. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP THREE: List the multiples of 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40:
39. 39. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP THREE: List the multiples of 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40: 40,80,120,160,200,240
40. 40. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40: 40,80,120,160,200,240
41. 41. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. STEP FOUR: Find the common multiples in all 3 lists. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40: 40,80,120,160,200,240
42. 42. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40: 40,80,120,160,200,240
43. 43. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40: 40,80,120,160,200,240 Which multiple do they have in common?
44. 44. Example Find the Least Common Multiple (LCM) of 8, 10, and 40. 8: 8,16,24,32,40,48,56 10: 10,20,30,40,50,60,70 40: 40,80,120,160,200,240 Which multiple LCM is 40 do they have in common?