Lcm

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Lcm

  1. 1. Thursday, August 18th<br /><ul><li>Complete Warm Up
  2. 2. Write down Homework
  3. 3. Take out Homework (WKS 4-3)</li></ul>Warm Up<br />What is the Greatest Common Factor of the following numbers:<br />1. 132 and 144 2. 122 and 124<br />
  4. 4. Alert!!!!<br />Test Moved to MONDAY<br />
  5. 5. Corny Joke of the Day<br />Why did Preshy eat his homework?<br />Because the teacher said “it was a piece of cake”<br />
  6. 6. Homework Answers <br />Check your card number. Show on white board<br />
  7. 7. Table of Contents CHANGE<br />Yesterday<br />Title: GCF Day #2 <br />Pages:11 & 12<br />
  8. 8. In your groups….<br />Two faucets are dripping. One faucet will drip every 4 seconds and the other faucet drips every 9 seconds. If a drop of water falls from both faucets at the same time, how many seconds will it be before you see the faucets drip at the same time again? <br />
  9. 9. Factors or multiples?<br />
  10. 10. Least Common Multiple<br />What does Multiple mean?<br />Give an example of a multiple of 4 <br />Give an example of a multiple of 8<br />What would be the least common multiple?<br />
  11. 11. Question of the Day<br />What should I check first when finding the least common multiple?<br />
  12. 12. Table of Contents<br />Date: 8/18 <br />Section: 5-1 <br />Title: LCM <br />Pages: 13 and 14 <br />
  13. 13. Steps to finding LCM<br /> Check to see if one of the numbers IS the LCM<br />Find prime factor of all numbers (list form) 2 x 2 x 3 x 3<br />Line up the common factors<br />Multiple one number from each column<br />
  14. 14. Just Watch!<br />Find LCM of 6 and 20<br />6 = 2 • 3<br />Write the prime factorization of each number. <br />20 = 2 • 2 • 5<br />Line up the common factors. <br />2 • 3 • 2 • 5<br />To find the LCM, multiply one number from each column. <br />2 • 3 • 2 • 5= 60<br />LCM: 60<br />
  15. 15. Let’s Try Together!<br />Find LCM of 4 and 10<br />#1<br />4 = 2 • 2<br />Write the prime factorization of each number. <br />10 = 2 • 5<br />Line up the common factors. <br />2 • 2 • 5<br />To find the LCM, multiply one number from each column. <br />2 • 2 • 5= 20<br />LCM: 20<br />
  16. 16. You Try!!<br />Find LCM of 12, 6, 8 <br />#2<br />12 = 22 • 3<br />Write the prime factorization of each number in exponential form. <br /> 6 = 2 • 3<br /> 8 = 23<br />To find the LCM, multiply each prime factor once with the greatest exponent used in any of the prime factorizations. <br />23• 3<br />23• 3= 24<br />LCM: 24<br />
  17. 17. You Got This!<br />LCM 15,6,4<br />#3<br />15 = 3 • 5<br />Write the prime factorization of each number in exponential form. <br /> 6 = 3 • 2<br /> 4 = 22<br />To find the LCM, multiply each prime factor once with the greatest exponent used in any of the prime factorizations. <br /> 3 • 5 • 22<br />3 • 5 • 22 = 60<br />LCM: 60<br />
  18. 18. Find the LCM and GCF <br /> 28 and 72<br />
  19. 19. Classwork Worksheet 28<br />
  20. 20. HomeworkStudy GuidePg. 1 & 2 <br />

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