LCM for 10 and 99

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What's the Least Common Multiple (LCM) of 10 and 99?

Answer

LCM of 10 and 99 is
990

First common multiples: 990; 1,980; 2,970; …

990 is divisible by both: 990 ÷ 10 = 99, 990 ÷ 99 = 10 — and 99 and 10 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/10 by 99 and of y/99 by 10.

10 and 99 are coprime (GCF = 1), so their LCM is simply the product: 10 × 99 = 990.

10 = 2 × 5

99 = 32 × 11

Prime1099Highest power
22—2
3—3232
55—5
11—1111

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

LCM = 2 × 32 × 5 × 11 = 990

See Also

FAQ

What's the Least Common Multiple (LCM) of 10 and 99?

LCM of 10 and 99 is 990

How to find the LCM of 10 and 99 using prime factorization?

To find the LCM of 10 and 99, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 990.

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 10 and 99: LCM = 990, GCF = 1.