LCM of 40 and 197
7880 is the LCM of 40 and 197. 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 40 and 197, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 40 and 197?
lcm (40 197) = (?)
40 => 2 x 2 x 2 x 5
197 => 197
= 2 x 2 x 2 x 5 x 197
= 7880
lcm (40 and 197) = 7880
7880 is the LCM of 40 and 197.
where,
40 is a positive integer,
197 is a positive integer,
7880 is the LCM of 40 and 197,
There is no common factors of 40 and 197 in {2 x 2 x 2 x 5, 197},
{2 x 2 x 2 x 5 x 197} in {2 x 2 x 2 x 5, 197} are the uncommon factors of 40 and 197.
Use in Mathematics: LCM of 40 and 197
The below are some of the mathematical applications where lcm of 40 and 197 can be used:
- to find the least number which is exactly divisible by 40 and 197.
- to find the common denominator for two fractions having 40 and 197 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 40 and 197 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 40 seconds and bell B tolls at 197 seconds repeatedly. The answer is that all bells A and B toll together at 7880 seconds for the first time, at 15760 seconds for the second time, at 23640 seconds for the third time and so on.
Important Notes: 40 and 197 lcm
The below are the important notes to be remembered while solving the lcm of 40 and 197:
- The common prime factors and the remaining prime factors of 40 and 197 should be multiplied to find the least common multiple of 40 and 197, when solving lcm by using prime factors method.
- The results of lcm of 40 and 197, and the lcm of 197 and 40 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 40 and 197?
The below solved example with step by step work shows how to find what is the lcm of 40 and 197 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 40 and 197?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 40
B = 197
What to be found:
find the lcm of 40 and 197
step 2 Find the prime factors of 40 and 197:
Prime factors of 40 = 2 x 2 x 2 x 5
Prime factors of 197 = 197
step 3Identify the repeated and non-repeated prime factors of 40 and 197:
Since there is no common factors between 40 and 197, multiplying the given numbers directly provides the LCM of
40 and 197.
= 40 x 197
= 7880
lcm(40 and 197) = 7880
Hence,
lcm of 40 and 197 is 7880
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 40 and 197.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 40 and 197
What to be found:
lcm (40, 197) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
40 and 197
step 3 Choose the divisor which divides each or most of the given integers (40 and 197), 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 40 and 197 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 40 | 197 |
| 2 | 20 | 197 |
| 2 | 10 | 197 |
| 5 | 5 | 197 |
| 197 | 1 | 197 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 40 and 197:
= 2 x 2 x 2 x 5 x 197
= 7880
LCM(40, 197) = 7880
The LCM of two numbers 40 and 197 is 7880