LCM for 45, 50 and 60
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What's the Least Common Multiple (LCM) of 45, 50 and 60?
Answer
LCM of 45, 50 and 60 is
900
First common multiples: 900; 1,800; 2,700; …
900 is divisible by all three: 900 ÷ 45 = 20, 900 ÷ 50 = 18, 900 ÷ 60 = 15 — and 20, 18 and 15 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/45 by 20 and of y/50 by 18 and of z/60 by 15.
45 = 32 × 5
50 = 2 × 52
60 = 22 × 3 × 5
| Prime | 45 | 50 | 60 | Highest power |
|---|---|---|---|---|
| 2 | — | 2 | 22 | 22 |
| 3 | 32 | — | 3 | 32 |
| 5 | 5 | 52 | 5 | 52 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 22 × 32 × 52 = 900
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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 |
|---|---|---|---|
| 45 | 45 | 50 | 450 |
| 45 | 46 | 50 | 10,350 |
| 45 | 47 | 50 | 21,150 |
| 45 | 48 | 50 | 3,600 |
| 45 | 49 | 50 | 22,050 |
| 45 | 50 | 50 | 450 |
| 45 | 50 | 51 | 7,650 |
| 45 | 50 | 52 | 11,700 |
| 45 | 50 | 53 | 23,850 |
| 45 | 50 | 54 | 1,350 |
| 45 | 50 | 55 | 4,950 |
| 45 | 50 | 56 | 12,600 |
| 45 | 50 | 57 | 8,550 |
| 45 | 50 | 58 | 13,050 |
| 45 | 50 | 59 | 26,550 |
| 45 | 50 | 60 | 900 |
| 45 | 50 | 61 | 27,450 |
| 45 | 50 | 62 | 13,950 |
| 45 | 50 | 63 | 3,150 |
| 45 | 50 | 64 | 14,400 |
| 45 | 50 | 65 | 5,850 |
| 45 | 50 | 66 | 4,950 |
| 45 | 50 | 67 | 30,150 |
| 45 | 50 | 68 | 15,300 |
| 45 | 50 | 69 | 10,350 |
| 45 | 50 | 70 | 3,150 |
| 45 | 50 | 71 | 31,950 |
| 45 | 50 | 72 | 1,800 |
| 45 | 50 | 73 | 32,850 |
| 45 | 50 | 74 | 16,650 |