Do you need to get the LCM of mixed numbers?

Answer 1

Only to add, subtract, or compare two fractions. Note: Technically, to add two fractions (for example) you don't need the LEAST common multiple; any common multiple will do. As an example, if you want to add 1/4 + 1/6 (or any mixed number that ends with this fraction), you can use 24 as a common denominator (you can obtain this by multiplying 4 x 6), even though the least common multiple is 12.To add two mixed fractions, the easiest way is usually to add the whole part and the fractional part separately.

Answer 2

The LCM refers to integers. You might need to get the LCD, the least common denominator, if you want to add and/or subtract mixed numbers.

Answer 3

Yes, but you need to make them top-heavy fractions.