Solutions by everydaycalculation.com

The LCM of 20 and 11 is 220.

- Find the prime factorization of 20

20 = 2 × 2 × 5 - Find the prime factorization of 11

11 = 11 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 5 × 11 - LCM =
**220**

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Find least common multiple (LCM) of: 40 & 22 60 & 33 100 & 55 140 & 77 40 & 11 20 & 22 60 & 11 20 & 33 100 & 11 20 & 55 140 & 11 20 & 77

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