LCM of 243 and 270
2430 is the LCM of 243 and 270. The step-by-step solution using prime factors and special division methods is one of the simple methods to easily understand how to find what is the LCM of 243 and 270, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 243 and 270?
lcm (243 270) = (?)
243 => 3 x 3 x 3 x 3 x 3
270 => 2 x 3 x 3 x 3 x 5
= 3 x 3 x 3 x 3 x 3 x 2 x 5
= 2430
lcm (243 and 270) = 2430
2430 is the LCM of 243 and 270.
where,
243 is a positive integer,
270 is a positive integer,
2430 is the LCM of 243 and 270,
{3 x 3 x 3} in {3 x 3 x 3 x 3 x 3, 2 x 3 x 3 x 3 x 5} are the common factors of 243 and 270,
{3 x 3 x 2 x 5} in {3 x 3 x 3 x 3 x 3, 2 x 3 x 3 x 3 x 5} are the uncommon factors of 243 and 270.
Use in Mathematics: LCM of 243 and 270
The below are some of the mathematical applications where lcm of 243 and 270 can be used:
- to find the least number which is exactly divisible by 243 and 270.
- to find the common denominator for two fractions having 243 and 270 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 243 and 270 helps to find the exact time when two similar and recurring events with different time schedule happens together at the same time. For example, the real world problems involve lcm in situations to find at what time the bells A and B all toll together, if bell A tolls at 243 seconds and bell B tolls at 270 seconds repeatedly. The answer is that all bells A and B toll together at 2430 seconds for the first time, at 4860 seconds for the second time, at 7290 seconds for the third time and so on.
Important Notes: 243 and 270 lcm
The below are the important notes to be remembered while solving the lcm of 243 and 270:
- The common prime factors and the remaining prime factors of 243 and 270 should be multiplied to find the least common multiple of 243 and 270, when solving lcm by using prime factors method.
- The results of lcm of 243 and 270, and the lcm of 270 and 243 are identical, it means the order of given numbers in the lcm calculation doesn't affect the results.
How-to: What is the LCM of 243 and 270?
The below solved example with step by step work shows how to find what is the lcm of 243 and 270 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 243 and 270?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 243
B = 270
What to be found:
find the lcm of 243 and 270
step 2 Find the prime factors of 243 and 270:
Prime factors of 243 = 3 x 3 x 3 x 3 x 3
Prime factors of 270 = 2 x 3 x 3 x 3 x 5
step 3 Identify the repeated and non-repeated prime factors of 243 and 270:
{3, 3, 3} are the most repeated factors and {3 x 3 x 2 x 5} are the non-repeated factors of 243 and 270.
step 4 Find the product of repeated and non-repeated prime factors of 243 and 270:
= 3 x 3 x 3 x 3 x 3 x 2 x 5
= 2430
lcm(243 and 270) = 2430
Hence,
lcm of 243 and 270 is 2430
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 243 and 270.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 243 and 270
What to be found:
lcm (243, 270) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
243 and 270
step 3 Choose the divisor which divides each or most of the given integers (243 and 270), divide each integers separately and write down the quotient in the next line right under the respective integers. Bring down the integer to the next line if any integer in 243 and 270 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 243 | 270 |
| 3 | 243 | 135 |
| 3 | 81 | 45 |
| 3 | 27 | 15 |
| 3 | 9 | 5 |
| 3 | 3 | 5 |
| 5 | 1 | 5 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 243 and 270:
= 2 x 3 x 3 x 3 x 3 x 3 x 5
= 2430
LCM(243, 270) = 2430
The LCM of two numbers 243 and 270 is 2430