Least Common Denominator of 2, 4 and 80 (LCD of 2, 4 and 80)

Least Common Denominator (LCD) of 2, 4, and 80

The Least Common Denominator of 2, 4 and 80, also known as the Lowest Common Denominator of 2, 4 and 80, is useful if you need to add, subtract, or compare three fractions with the denominators of 2, 4 and 80.

The fractions with 2, 4 and 80 denominators will look like this:

		X
		2

		Y
		4

		Z
		80

The Least Common Denominator of 2, 4 and 80 is 80.

You need to multiply 2 by 40, 4 by 20, and 80 by 1 to make them all 80. Furthermore, you need to multiply the numerators by the same amounts to keep the fraction values the same.

Therefore, you have to make the following calculations so the fractions keep the same value and get the same denominator:

		X x 40
		2 x 40

		Y x 20
		4 x 20

		Z x 1
		80 x 1

Which gives you the following three new fractions that you can add, subtract and compare:

		40X
		80

		20Y
		80

		1Z
		80

You can substitute X, Y and Z with the numerators of your fractions with 2, 4 and 80 denominators. This way you can add, subtract and compare your fractions correctly.

Least Common Denominator Calculator
Please enter another two or three denominators below so we can calculate the Least Common Denominator (LCD) for you:

Least Common Denominator (LCD) of 2, 4 and 81
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Notes

The Least Common Denominator of 2, 4 and 80 is the same as the Least Common Multiple of 2, 4 and 80.

To calculate what to multiply each denominator and corresponding numerator by, we divided the LCD by each of the denominators.