## TOOL: GCF CALCULATOR - 4 NUMBERS

#### GCF CALCULATOR - 4 NUMBERS

Enter positive whole numbers.

RESULT

GCF(24, 48, 60, 72) = 2 . 2 . 3 = 12

(Click here to see the LCM calculation of 24, 48, 60 and 72.)

DESCRIPTIONS

GCD is equal to the product of the common prime factors on the left side of the cake above.

OTHER INFORMATION

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.

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## INFORMATION

### GCF CAKE METHOD

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.

### WHAT IS GCF CALCULATOR - 4 NUMBERS?

4 Input GCF calculator,

• Draws the upside-down cake associated with the given numbers,
• Graphically illustrates the result,
• Computes the GCF and
• Calculates all common factors of the entered numbers.

### HOW TO USE GCF CALCULATOR - 4 NUMBERS?

You can use the GCF calculator in two ways.

• #### USER INPUTS

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

• #### RANDOM INPUTS

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.

• #### CLEARING THE INPUT BOX

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.