GCF of 40 and 88


The gcf of 40 and 88 is the largest positive integer that divides the numbers 40 and 88 without a remainder. Spelled out, it is the greatest common factor of 40 and 88. Here you can find the gcf of 40 and 88, 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 40 and 88, but also that of three or more integers including forty and eighty-eight for example. Keep reading to learn everything about the gcf (40,88) and the terms related to it.

What is the GCF of 40 and 88

If you just want to know what is the greatest common factor of 40 and 88, it is 8. Usually, this is written as

gcf(40,88) = 8

The gcf of 40 and 88 can be obtained like this:

  • The factors of 40 are 40, 20, 10, 8, 5, 4, 2, 1.
  • The factors of 88 are 88, 44, 22, 11, 8, 4, 2, 1.
  • The common factors of 40 and 88 are 8, 4, 2, 1, intersecting the two sets above.
  • In the intersection factors of 40 ∩ factors of 88 the greatest element is 8.
  • Therefore, the greatest common factor of 40 and 88 is 8.

Taking the above into account you also know how to find all the common factors of 40 and 88, not just the greatest. In the next section we show you how to calculate the gcf of forty and eighty-eight by means of two more methods.

How to find the GCF of 40 and 88

The greatest common factor of 40 and 88 can be computed by using the least common multiple aka lcm of 40 and 88. This is the easiest approach:

gcf (40,88) = $\frac{40 \times 88}{lcm(40,88)} = \frac{3520}{440}$ = 8

Alternatively, the gcf of 40 and 88 can be found using the prime factorization of 40 and 88:

  • The prime factorization of 40 is: 2 x 2 x 2 x 5
  • The prime factorization of 88 is: 2 x 2 x 2 x 11
  • The prime factors and multiplicities 40 and 88 have in common are: 2 x 2 x 2
  • 2 x 2 x 2 is the gcf of 40 and 88
  • gcf(40,88) = 8

In any case, the easiest way to compute the gcf of two numbers like 40 and 88 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 40,88. The calculation is conducted automatically.

The gcf is...
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Use of GCF of 40 and 88

What is the greatest common factor of 40 and 88 used for? Answer: It is helpful for reducing fractions like 40 / 88. Just divide the nominator as well as the denominator by the gcf (40,88) to reduce the fraction to lowest terms.

$\frac{40}{88} = \frac{\frac{40}{8}}{\frac{88}{8}} = \frac{5}{11}$.

Properties of GCF of 40 and 88

The most important properties of the gcf(40,88) are:

  • Commutative property: gcf(40,88) = gcf(88,40)
  • Associative property: gcf(40,88,n) = gcf(gcf(88,40),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 40 and 88 is 8. In common notation: gcf (40,88) = 8.

If you have been searching for gcf 40 and 88 or gcf 40 88 then you have come to the correct page, too. The same is the true if you typed gcf for 40 and 88 in your favorite search engine.

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

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