How do you find the GCF and LCM of numbers?

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nifeonibonitozg · Accepted Answer

Step 1Given two numbers, you can find the GCF as follows:Divide the larger number by the smaller to give a quotient and remainder.If the remainder is zero, then the GCF is the smaller number.Otherwise repeat with the smaller number and the remainder.For example, to find the GCF of 252 and 70 proceed as follows:            252      70        =    3   with remainder 42            70      42        =    1   with remainder 28            42      28        =    1   with remainder 14            28      14        =    2   with remainder 0So the GCF is 14Then to find the LCM, multiply the two original numbers together and divide by the GCF.In our example, the LCM of 252 and 70 is:                    252        ⋅        70            14        =    1260

How do you find the GCF and LCM of numbers?

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