GCF of 48 and 80


The gcf of 48 and 80 is the largest positive integer that divides the numbers 48 and 80 without a remainder. Spelled out, it is the greatest common factor of 48 and 80. Here you can find the gcf of 48 and 80, along with a total of three methods for computing it. In addition, we have a calculator you should check out. Not only can it determine the gcf of 48 and 80, but also that of three or more integers including forty-eight and eighty for example. Keep reading to learn everything about the gcf (48,80) and the terms related to it.

What is the GCF of 48 and 80

If you just want to know what is the greatest common factor of 48 and 80, it is 16. Usually, this is written as

gcf(48,80) = 16

The gcf of 48 and 80 can be obtained like this:

  • The factors of 48 are 48, 24, 16, 12, 8, 6, 4, 3, 2, 1.
  • The factors of 80 are 80, 40, 20, 16, 10, 8, 5, 4, 2, 1.
  • The common factors of 48 and 80 are 16, 8, 4, 2, 1, intersecting the two sets above.
  • In the intersection factors of 48 ∩ factors of 80 the greatest element is 16.
  • Therefore, the greatest common factor of 48 and 80 is 16.

Taking the above into account you also know how to find all the common factors of 48 and 80, not just the greatest. In the next section we show you how to calculate the gcf of forty-eight and eighty by means of two more methods.

How to find the GCF of 48 and 80

The greatest common factor of 48 and 80 can be computed by using the least common multiple aka lcm of 48 and 80. This is the easiest approach:

gcf (48,80) = $\frac{48 \times 80}{lcm(48,80)} = \frac{3840}{240}$ = 16

Alternatively, the gcf of 48 and 80 can be found using the prime factorization of 48 and 80:

  • The prime factorization of 48 is: 2 x 2 x 2 x 2 x 3
  • The prime factorization of 80 is: 2 x 2 x 2 x 2 x 5
  • The prime factors and multiplicities 48 and 80 have in common are: 2 x 2 x 2 x 2
  • 2 x 2 x 2 x 2 is the gcf of 48 and 80
  • gcf(48,80) = 16

In any case, the easiest way to compute the gcf of two numbers like 48 and 80 is by using our calculator below. Note that it can also compute the gcf of more than two numbers, separated by a comma. For example, enter 48,80. The calculation is conducted automatically.

The gcf is...
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Use of GCF of 48 and 80

What is the greatest common factor of 48 and 80 used for? Answer: It is helpful for reducing fractions like 48 / 80. Just divide the nominator as well as the denominator by the gcf (48,80) to reduce the fraction to lowest terms.

$\frac{48}{80} = \frac{\frac{48}{16}}{\frac{80}{16}} = \frac{3}{5}$.

Properties of GCF of 48 and 80

The most important properties of the gcf(48,80) are:

  • Commutative property: gcf(48,80) = gcf(80,48)
  • Associative property: gcf(48,80,n) = gcf(gcf(80,48),n) $\hspace{10px}n\hspace{3px}\epsilon\hspace{3px}\mathbb{Z}$

The associativity is particularly useful to get the gcf of three or more numbers; our calculator makes use of it.

To sum up, the gcf of 48 and 80 is 16. In common notation: gcf (48,80) = 16.

If you have been searching for gcf 48 and 80 or gcf 48 80 then you have come to the correct page, too. The same is the true if you typed gcf for 48 and 80 in your favorite search engine.

Note that you can find the greatest common factor of many integer pairs including forty-eight / eighty by using the search form in the sidebar of this page.

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