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Find LCM

Find LCM. The least common multiple is the smallest of the common multiples Warm-Up: CR on Integers. Toolbox: Multiple: the answers to the multiplication tables for a given number Common: #’s in both/all sets of data --------------------------------------------- STEPS:

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Find LCM

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  1. Find LCM The least common multiple is the smallest of the common multiples Warm-Up: CR on Integers

  2. Toolbox: • Multiple: the answers to the multiplication tables for a given number • Common: #’s in both/all sets of data • --------------------------------------------- • STEPS: • List all multiples for all given numbers • Circle first # that is common to both/all sets of numbers Exit Question: 37 Find LCM and GCF of 20 and 32 -------------------------------------------------------- LEAST COMMON MULTIPLE NOTES (LCM Example: Find LCM of 8 and 12 8 = 8, 16, 24, 32, 40, 48, 56 12 = 12, 24, 36, 48 24 is the LCM.

  3. Practice on Finding LCM and GCF • 1. Find LCM and GCF of 20 and 30 • 30 2 x 10 2 x 15 2 x 5 5 x 3 20 = 2 x 2 x 5 20= 20,40,60,80,100 30 = 2 x 3 x 5 30 = 30, 60, 90 GCF = 2 x 5 = 10 The LCM is 60

  4. Find LCM and GCF of…. Write hw on pg.36 • 1. 12, 9 • 2. 10 and 15 • 3. 3 and 6 • 4. 9 and 30 • 5. 18 and 30

  5. Exit Question…. • Find LCM and GCF of 20 and 32

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