Enter positive whole numbers.
GCF(24, 48, 60, 72) = 2 . 2 . 3 = 12
GCD is equal to the product of the common prime factors on the left side of the cake above.
The common factors of 24, 48, 60 and 72 are 1., 2, 3, 4, 6 and 12. Among these numbers, the greatest one is 12.
The greatest common factor (GCF or GCD) of four positive whole numbers is the largest number that divides all these numbers exactly. GCF of four numbers can be found by using the upside-down cake method.
In this method, after we write the given numbers, we seek for the prime numbers that divides all the given numbers exactly. If we find such a prime number, we write it to the left. Then we divide the whole numbers on the right by this prime number and write the results on a new layer. We continue the process until no prime number that divides all the numbers on the right remains.
Product of the prime numbers on the right gives us the GCF. This method is also known as the ladder method.
4 Input GCF calculator,
You can use the GCF calculator in two ways.
You can enter four positive whole numbers to the input boxes and click on the "CALCULATE" button. The result and explanations appaer below the calculator
You can click on the DIE ICON next to the input boxes. If you use this property, four random numbers are generated and entered to the calculator, automatically. You can see the result and explanations below the calculator. You can create your own examples and practice using this property.
To check the GCF of other numbers you can clear the input box by clicking on the CLEAR button under the input box.
You can copy the generated solution by clicking on the "Copy Text" link, appaers under the solution panel.
Even you can download the solution as an image file with .jpg extension if you click on the "Download Solution" link at the bottom of the solution panel. You can share the downloaded image file.