Question
Find the LCM for the given numbers by an appropriate method. 135, 56, and 150.
Which method is the most appropriate?
Which method is the most appropriate?
Answers
Vipster
135 56 150
divide by 5 27 56 30
divide by 3 9 56 10
divide by 2 9 28 5
so the LCM is 5 x 3 x 2 x 9 x 28 x 5
= 37800
Anonymous
Where did you get the numbers to divide by from?
Vipster
you gotto look at he numbers at hand
if it ends in a 5 or 0 then it can be divided by 5,
if it ends in a multiple of 2 , then number is divisible by 2
if the digits added up are divisible by 3 then number is divisible by 3
that's how you choose, you first try to see if there is any number that can be a factor for all the numbers , if not then try 2,3,5 etc you gotto know the tables
200-400-800 lcm
40000