LCM for 40, 50 and 80
"Least Common Multiple of 3 Numbers" Calculator
What's the Least Common Multiple (LCM) of 40, 50 and 80?
Answer
LCM of 40, 50 and 80 is
400
First common multiples: 400; 800; 1,200; …
400 is divisible by all three: 400 ÷ 40 = 10, 400 ÷ 50 = 8, 400 ÷ 80 = 5 — and 10, 8 and 5 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/40 by 10 and of y/50 by 8 and of z/80 by 5.
40 = 23 × 5
50 = 2 × 52
80 = 24 × 5
| Prime | 40 | 50 | 80 | Highest power |
|---|---|---|---|---|
| 2 | 23 | 2 | 24 | 24 |
| 5 | 5 | 52 | 5 | 52 |
LCM = 24 × 52 = 400
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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 |
|---|---|---|---|
| 40 | 50 | 65 | 2,600 |
| 40 | 50 | 66 | 6,600 |
| 40 | 50 | 67 | 13,400 |
| 40 | 50 | 68 | 3,400 |
| 40 | 50 | 69 | 13,800 |
| 40 | 50 | 70 | 1,400 |
| 40 | 50 | 71 | 14,200 |
| 40 | 50 | 72 | 1,800 |
| 40 | 50 | 73 | 14,600 |
| 40 | 50 | 74 | 7,400 |
| 40 | 50 | 75 | 600 |
| 40 | 50 | 76 | 3,800 |
| 40 | 50 | 77 | 15,400 |
| 40 | 50 | 78 | 7,800 |
| 40 | 50 | 79 | 15,800 |
| 40 | 50 | 80 | 400 |
| 40 | 50 | 81 | 16,200 |
| 40 | 50 | 82 | 8,200 |
| 40 | 50 | 83 | 16,600 |
| 40 | 50 | 84 | 4,200 |
| 40 | 50 | 85 | 3,400 |
| 40 | 50 | 86 | 8,600 |
| 40 | 50 | 87 | 17,400 |
| 40 | 50 | 88 | 2,200 |
| 40 | 50 | 89 | 17,800 |
| 40 | 50 | 90 | 1,800 |
| 40 | 50 | 91 | 18,200 |
| 40 | 50 | 92 | 4,600 |
| 40 | 50 | 93 | 18,600 |
| 40 | 50 | 94 | 9,400 |