LCM of 80 and 156
3120 is the LCM of 80 and 156. 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 80 and 156, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 80 and 156?
lcm (80 156) = (?)
80 => 2 x 2 x 2 x 2 x 5
156 => 2 x 2 x 3 x 13
= 2 x 2 x 2 x 2 x 5 x 3 x 13
= 3120
lcm (80 and 156) = 3120
3120 is the LCM of 80 and 156.
where,
80 is a positive integer,
156 is a positive integer,
3120 is the LCM of 80 and 156,
{2 x 2} in {2 x 2 x 2 x 2 x 5, 2 x 2 x 3 x 13} are the common factors of 80 and 156,
{2 x 2 x 5 x 3 x 13} in {2 x 2 x 2 x 2 x 5, 2 x 2 x 3 x 13} are the uncommon factors of 80 and 156.
Use in Mathematics: LCM of 80 and 156
The below are some of the mathematical applications where lcm of 80 and 156 can be used:
- to find the least number which is exactly divisible by 80 and 156.
- to find the common denominator for two fractions having 80 and 156 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 80 and 156 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 80 seconds and bell B tolls at 156 seconds repeatedly. The answer is that all bells A and B toll together at 3120 seconds for the first time, at 6240 seconds for the second time, at 9360 seconds for the third time and so on.
Important Notes: 80 and 156 lcm
The below are the important notes to be remembered while solving the lcm of 80 and 156:
- The common prime factors and the remaining prime factors of 80 and 156 should be multiplied to find the least common multiple of 80 and 156, when solving lcm by using prime factors method.
- The results of lcm of 80 and 156, and the lcm of 156 and 80 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 80 and 156?
The below solved example with step by step work shows how to find what is the lcm of 80 and 156 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 80 and 156?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 80
B = 156
What to be found:
find the lcm of 80 and 156
step 2 Find the prime factors of 80 and 156:
Prime factors of 80 = 2 x 2 x 2 x 2 x 5
Prime factors of 156 = 2 x 2 x 3 x 13
step 3 Identify the repeated and non-repeated prime factors of 80 and 156:
{2, 2} are the most repeated factors and {2 x 2 x 5 x 3 x 13} are the non-repeated factors of 80 and 156.
step 4 Find the product of repeated and non-repeated prime factors of 80 and 156:
= 2 x 2 x 2 x 2 x 5 x 3 x 13
= 3120
lcm(80 and 156) = 3120
Hence,
lcm of 80 and 156 is 3120
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 80 and 156.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 80 and 156
What to be found:
lcm (80, 156) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
80 and 156
step 3 Choose the divisor which divides each or most of the given integers (80 and 156), 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 80 and 156 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 80 | 156 |
| 2 | 40 | 78 |
| 2 | 20 | 39 |
| 2 | 10 | 39 |
| 3 | 5 | 39 |
| 5 | 5 | 13 |
| 13 | 1 | 13 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 80 and 156:
= 2 x 2 x 2 x 2 x 3 x 5 x 13
= 3120
LCM(80, 156) = 3120
The LCM of two numbers 80 and 156 is 3120