LCM Calculator
Find the least common multiple (LCM) of two or more numbers.
Result
Enter your numbers to see the LCM result here.
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How to Calculate the LCM
- List Method: List the multiples of each number and find the smallest one in common.
- Formula Method: For two numbers, use LCM(a, b) = |a × b| / GCD(a, b).
Example: The LCM of 12, 18, and 30 is 180.
How to Build Skills with LCM Calculations
- Practice with Different Sets: Try finding the LCM of pairs and groups of numbers.
- Use for Adding Fractions: Use the LCM of denominators to add or subtract fractions.
- Apply in Real Life: Use LCM for scheduling, event planning, or solving problems with repeating cycles.
- Understand the Formula: Learn how to use the GCD to quickly find the LCM.
Example: LCM of 8 and 14: GCD is 2, so LCM = (8 × 14) / 2 = 56.
Frequently Asked Questions
The LCM (least common multiple) is the smallest number that is a multiple of two or more numbers.
To calculate the LCM, list the multiples of each number and find the smallest one in common, or use the formula LCM(a, b) = |a × b| / GCD(a, b).
The LCM is used in adding and subtracting fractions, scheduling, and solving problems involving repeating events.