Calculation method 1. Enumeration method: enumerate the common multiples of two numbers respectively, and then find their minimum common multiples. such as

2. coprime method: If two numbers only have the common factor of 1, then their minimum common multiple is the product of these two numbers.

3. Multiplication: If larger numbers are multiples of smaller numbers, then their least common multiple is larger numbers.

4. Doubling method: As can be seen from the previous enumeration method, the least common multiple of two numbers is a multiple of a larger number and a smaller number respectively. Double a larger number (for example, expand it to the original 1 times, 2 times, 3 times ...). If the doubled number is a multiple of a smaller number, this number is their least common multiple.

5. Short division: When the last two quotients have only one common factor 1, multiply the divisor and quotient, which is their least common multiple.

The concept of least common multiple The common multiple of two or more integers is called their common multiple. The least common multiple of two or more integers is called their least common multiple. The least common multiple of integers a and b is marked as [a, b]. Similarly, the least common multiples of a, b and c are marked as [a, b, c], and the least common multiples of multiple integers also have the same marks.

The concept of greatest common divisor The greatest common divisor, also called greatest common factor and greatest common divisor, refers to the greatest divisor of two or more integers. The greatest common divisor of a and b is (a, b), the same greatest common divisor of a, b and c is (a, b, c), and the greatest common divisor of multiple integers also has the same symbol. There are many ways to find the greatest common divisor, and the common ones are prime factor decomposition, short division, phase division and phase subtraction.

The above is my knowledge about the least common multiple, and I hope it will help you in your study.