What is the LCM of 15 and 20?
The LCM of 15 and 20 is 60.
Steps to find LCM
- Find the prime factorization of 15
15 = 3 × 5 - Find the prime factorization of 20
20 = 2 × 2 × 5 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 3 × 5 - LCM = 60
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Find least common multiple (LCM) of: 30 & 40 45 & 60 75 & 100 3 & 4 105 & 140 30 & 20 15 & 40 45 & 20 15 & 60 75 & 20 15 & 100 105 & 20 15 & 140
LCM Calculator
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