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# Sec. 5.4

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• 1. Fill in the chart above.
• 2. Learning Target:Students will learn how to find the least common multiple (LCM) of two or more numbers and they will learn the different strategies for doing so.
• 3. These are the multiples of 2 and 3. (always start by multiplying by 1)The first three common multiples are 6, 12, 18.The least common multiple (LCM) is 6.
• 4. Find two common multiples of the numbers.6, 18
• 5. Answer: 6, 18 Common multiples: 18, 36
• 6. Methods of finding the LCM1. List the multiples of each number2. Prime Factorization- Factor Tree3. Limon CAKE
• 7. Find the LCM of 3, 5.1. List the multiples of each number(do two multiples at a time)3: 3, 6, 9, 12, 155: 5, 10, 15, 20LCM: 15
• 8. Find the LCM of 8, 10.2. Prime Factorization- Factor TreePrime factorization of8: 2, 2, 210:2, 5LCM: 2 x 2 x 2 x 5 = 40
• 9. Find the LCM of 50, 90.3. Limon CAKE2 50 905 25 45 5 9 = 450LCM: 2 x 5 x 5 x 9 = 450
• 10. Limon CAKE methodyou do the same steps as the CAKE method except that you multiple the left side and the bottom side of the cake(which makes a L shape) to find the LCM.
• 11. Find the LCM of the numbers.8, 149, 15
• 12. Answers:8, 14LCM: 569, 15LCM: 45
• 13. Can you find the least common multiple (LCM) of two or more numbers?