What is the Least Common Denominator of 1 and 55?




You need to know the least common denominator (LCD) of 1 and 55 if you want to add or subtract two fractions with 1 and 55 as denominators.

The least common denominator, also called lowest common denominator (LCD), of 1 and 55 is 55.


Here is a math problem example where you need to know the LCD of 1 and 55 to solve:

3/1 + 2/55 = ?

Step 1) Take the LCD and divide each denominator by it as follows:

55/1 = 55
55/55 = 1

Step 2) Multiply each nominator with the respective answers from Step 1:

3 x 55 = 165
2 x 1 = 2

Step 3) Put it all together to solve the problem:

165/55 + 2/55 = 167/55
= 3/1 + 2/55 = 167/55

It's that easy! Once again, the lowest common denominator (LCD) of 1 and 55 is as follows:

55


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