Find the least common multiple of two numbers. Solve application problems using the least common multiple.
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Multiples and Common Multiples, accessed on Sept. 28, 2017, 4:34 p.m., is licensed by Illustrative Mathematics under either the CC BY 4.0 or CC BY-NC-SA 4.0. For further information, contact Illustrative Mathematics.
Find the least common multiple of 8 and 12 using prime factorization.
Use this same method to find the least common multiple of 12 and 9.
Tre has two alarm clocks set to go off in the morning. One alarm will buzz every 6 minutes, and the other will beep every 9 minutes. Both alarms go off at 6:15 a.m.
Tre thinks the next time that both alarms will go off at the same time will be in 54 minutes or at 7:09. Do you agree with Tre? Explain your reasoning.
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The following resources include problems and activities aligned to the objective of the lesson that can be used to create your own problem set.
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Find the least common multiple of 6 and 14. Show your work.
A Venn diagram showing the prime factors for two numbers is shown below. Use it to answer the questions.
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