LCM for 3 and 30

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What's the Least Common Multiple (LCM) of 3 and 30?

Answer

LCM of 3 and 30 is
30

First common multiples: 30, 60, 90, …

As a common denominator: multiply the top and bottom of x/3 by 10.

3 divides 30 (30 ÷ 3 = 10), so the LCM is the larger number itself.

3 — prime

30 = 2 × 3 × 5

Prime330Highest power
2—22
3333
5—55

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 2 × 3 × 5 = 30

See Also

FAQ

What's the Least Common Multiple (LCM) of 3 and 30?

LCM of 3 and 30 is 30

How to find the LCM of 3 and 30 using prime factorization?

To find the LCM of 3 and 30, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 30.

What is the difference between LCM and GCF?

LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 3 and 30: LCM = 30, GCF = 3.