LCM for 20 and 125
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What's the Least Common Multiple (LCM) of 20 and 125?
Answer
LCM of 20 and 125 is
500
First common multiples: 500; 1,000; 1,500; …
500 is divisible by both: 500 ÷ 20 = 25, 500 ÷ 125 = 4 — and 25 and 4 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/20 by 25 and of y/125 by 4.
20 = 22 × 5
125 = 53
| Prime | 20 | 125 | Highest power |
|---|---|---|---|
| 2 | 22 | — | 22 |
| 5 | 5 | 53 | 53 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 22 × 53 = 500
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- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
- Least Common Multiple of 3 Numbers - Find the Least Common Multiple (LCM) of three numbers
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Multiples of a Number - List the first 10 multiples of any number from 1 to 999
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