LCM for 20, 25 and 50
"Least Common Multiple of 3 Numbers" Calculator
What's the Least Common Multiple (LCM) of 20, 25 and 50?
Answer
LCM of 20, 25 and 50 is
100
First common multiples: 100, 200, 300, …
100 is divisible by all three: 100 ÷ 20 = 5, 100 ÷ 25 = 4, 100 ÷ 50 = 2 — and 5, 4 and 2 have no factor but 1 common to all of them, so no smaller number is. As a common denominator: multiply the top and bottom of x/20 by 5 and of y/25 by 4 and of z/50 by 2.
20 = 22 × 5
25 = 52
50 = 2 × 52
| Prime | 20 | 25 | 50 | Highest power |
|---|---|---|---|---|
| 2 | 22 | — | 2 | 22 |
| 5 | 5 | 52 | 52 | 52 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 22 × 52 = 100
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See Also
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
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LCM Table
| 1st | 2nd | 3rd | LCM |
|---|---|---|---|
| 20 | 25 | 35 | 700 |
| 20 | 25 | 36 | 900 |
| 20 | 25 | 37 | 3,700 |
| 20 | 25 | 38 | 1,900 |
| 20 | 25 | 39 | 3,900 |
| 20 | 25 | 40 | 200 |
| 20 | 25 | 41 | 4,100 |
| 20 | 25 | 42 | 2,100 |
| 20 | 25 | 43 | 4,300 |
| 20 | 25 | 44 | 1,100 |
| 20 | 25 | 45 | 900 |
| 20 | 25 | 46 | 2,300 |
| 20 | 25 | 47 | 4,700 |
| 20 | 25 | 48 | 1,200 |
| 20 | 25 | 49 | 4,900 |
| 20 | 25 | 50 | 100 |
| 20 | 25 | 51 | 5,100 |
| 20 | 25 | 52 | 1,300 |
| 20 | 25 | 53 | 5,300 |
| 20 | 25 | 54 | 2,700 |
| 20 | 25 | 55 | 1,100 |
| 20 | 25 | 56 | 1,400 |
| 20 | 25 | 57 | 5,700 |
| 20 | 25 | 58 | 2,900 |
| 20 | 25 | 59 | 5,900 |
| 20 | 25 | 60 | 300 |
| 20 | 25 | 61 | 6,100 |
| 20 | 25 | 62 | 3,100 |
| 20 | 25 | 63 | 6,300 |
| 20 | 25 | 64 | 1,600 |