lesson 48 l c m - catholic church | school | parish - … lcm note… · · 2016-11-21apr 79:10...
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48 LCM 2016.notebook
1
November 21, 2016
Nov 15:33 PM
Daily Do from last class Homework Answers 46:1. 26% 2. 5% 3. 13% 4. 39%
5. 12.5% 6. 51% 7. 70% 8. 12%
9. 65% 10. 60% 11. 35%
12. 60% 13. 92% 14. 30%
15. 34% 16. 3/20 17. 17/20
18. 1/100 19. 7/10 20. 1/4
21. 19/100 22. 33/100 23. 11/50
24. 19/20
Homework Answers 47
1. 0.05 2. 0.2 3. 0.21 4. 0.83
5. 0.07 6. 0.56 7. 0.16 8. 0.45
9. 0.273 10. 0.149 11. 0915
12. 0.293 13. 0.144 14. 0.8
15. 0.075 16. 0.105 17. 6%
18. 13% 19. 50% 20. 74%
21. 14% 22. 92% 23. 54%
24. 66% 25. 19.2% 26. 29.5%
27. 91.1% 28. 24.7% 29. 41.65%
30. 21.99% 31. 76.01% 32. 48.33%
Convert 6.5% into a decimal
Convert 5.042 into a percent
Apr 411:53 AM
Least
Common
Multiple
LESSON 48
48 LCM 2016.notebook
2
November 21, 2016
Nov 711:15 AM
Objective: To be able to find the least common multiples by listing, factorization, and cake method.
Virtue/Skill: Understanding things from different perspectives, help you to understand shortcuts. We should be building on what we know to solve things we do not know.
Apr 411:54 AM
To find the least common multiple:
1 make a list of multiples for each number. Locate the first lowest multiple they have in common.
(with practice you'll be able to do this mentally)
6: 6, 12, 18, 24, 30, 36, 42, 48, 54
9: 9, 18, 27, 36, 45, 54, 63, 72, 81The LCM is 18
LCM by Making a List
48 LCM 2016.notebook
3
November 21, 2016
Apr 77:45 AM
LCM by Prime Factorization
18, 108 42, 96#1 #2
Compare prime factorizations, only use the common factors once and multiply the leftovers
Apr 41:16 PM
2 find the prime factorization of each number. Identify ALL prime factors, for each prime factor write down the greatest number of times it appears in any number and multiply them together.
6 9
3 2 3 3
2 x 3 x 3= 18
LCM= 18
322 x 3
** Use ALL the prime numbers the maximum times for each number
48 LCM 2016.notebook
4
November 21, 2016
Apr 41:27 PM
FActor out the GCF and multiply that by bottom layer of cake
2 x 2 x 3 x 3 x 5
LCM= 180
LCM by Cake Method
9 12 15
Nov 219:56 AM
48 LCM 2016.notebook
5
November 21, 2016
Apr 79:10 AM
Use the Cake Method to find the LCM of the set of numbers.
18, 21, and 24
2 x 2 x 2 x 3 x 3 x 7
504
When two #s share more factors
Apr 79:28 AM
Using prime factorization find the LCM of the set of numbers.
9, 23, 64
48 LCM 2016.notebook
6
November 21, 2016
Nov 141:30 PM
If the set of numbers has one prime number and one composite number and the prime number IS NOT a factor of the composite.... just multiply the two numbers together to find the LCM.
*
Nov 217:47 AM
5r2y and 15ry
48 LCM 2016.notebook
7
November 21, 2016
Nov 136:13 PM
Assignment: Workbook 48
SummaryObjective: To be able to find common multiples. To be able to find the least common multiples by listing, factorization, and cake method.
Virtue/Skill: Understanding things from different perspectives, help you to understand shortcuts. We should be building on what we know to solve things we do not know.
Oct 267:09 AM
Exit Question
What is the LCM of 15,18,30