What is the LCM of 3.6, 1.8, 0.144 and 0.12?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 3.6
For decimals, make the number of decimal places equal, find the LCM of the numbers without the decimal point, and then put the decimal point back in the same place.
The most decimal places is three (0.144), so write all with three places: 3.600, 1.800, 0.144, 0.120
Without the decimal point: 3600, 1800, 144, 120
\(3600\div1800=2\), \(3600\div144=25\), \(3600\div120=30\), so 3600 is a multiple of all the others
LCM of 3600, 1800, 144, 120 \(=3600\)
Putting back three decimal places: \(3.600=3.6\)
The LCM is 3.6.