find the L.C.M using common division method of 20 25 30 45
Answers
Answer:
The least common multiple is a product of common & odd prime factors between the integers which is divisible by each one an integer of this same group.
For example: To calculate the lcm of 20,25 and 30 follow the steps below:-
Step1 : Arrange the numbers (20 25 30) in horizontal format leaving space in between.
Step2: Choose the divisor which divides each or most of the integers of in the group (20 25 30), 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 the integer is not divisible by the divisor.
Repeat the same process until all the integers are brought to 1.
Step3:Multiply the divisors to find the lcm of 20, 25 and 30
5 x 2 x 5 x 3 x 2 = 300
LCM(20, 25, 30) = 300
The least common multiple for three numbers 20, 25 and 30 is 300.
Step-by-step explanation:
2|20 25 30 45
2 |10 25. 15. 45
3|5 25 15 45
3|5 25 3 15
3|5 25 1 5
5|1 5 1 1
5|1 1 1 1
lcm=2^2^3^3^3^5^5
=2700