Question

how to find the GCF of each pair of numbers.


dont copy from internet..

Give with example.​

Answer 1

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Steps to find the GCF of pair of numbers

Let us take, the numbers 3 and 15 as example

Step :1

Write the prime factors of the both numbers

3 = 3

15 = 3 × 5

Step 2:

Find the common factor among all the factors

we have, 3 as common factor

The common factors is GCF (GREATEST COMMON FACTOR)

Answer 2

Answer:

As an easy example, let’s say you need to find the GCF for 16 and 20.

As an easy example, let’s say you need to find the GCF for 16 and 20.All you do is subtract 16 from 20, to get the difference, 4, and this number — 4 — is the largest number that could POSSIBLY go into both 16 and 20 evenly.

As an easy example, let’s say you need to find the GCF for 16 and 20.All you do is subtract 16 from 20, to get the difference, 4, and this number — 4 — is the largest number that could POSSIBLY go into both 16 and 20 evenly.Once you know that, just test 2, 3, and 4 to find the highest one that goes into 16 and 20. Of course that would be 4, so you got the GCF right off the bat, in this case.

As an easy example, let’s say you need to find the GCF for 16 and 20.All you do is subtract 16 from 20, to get the difference, 4, and this number — 4 — is the largest number that could POSSIBLY go into both 16 and 20 evenly.Once you know that, just test 2, 3, and 4 to find the highest one that goes into 16 and 20. Of course that would be 4, so you got the GCF right off the bat, in this case.Keep in mind that that greatest possible greatest common factor is not necessarily the true, greatest common factor. But it does set an upper limit for GCFs, and having that upper limit really reduces kids’ stress.

As an easy example, let’s say you need to find the GCF for 16 and 20.All you do is subtract 16 from 20, to get the difference, 4, and this number — 4 — is the largest number that could POSSIBLY go into both 16 and 20 evenly.Once you know that, just test 2, 3, and 4 to find the highest one that goes into 16 and 20. Of course that would be 4, so you got the GCF right off the bat, in this case.Keep in mind that that greatest possible greatest common factor is not necessarily the true, greatest common factor. But it does set an upper limit for GCFs, and having that upper limit really reduces kids’ stress.Another example: find the GCF for 25 and 35.

As an easy example, let’s say you need to find the GCF for 16 and 20.All you do is subtract 16 from 20, to get the difference, 4, and this number — 4 — is the largest number that could POSSIBLY go into both 16 and 20 evenly.Once you know that, just test 2, 3, and 4 to find the highest one that goes into 16 and 20. Of course that would be 4, so you got the GCF right off the bat, in this case.Keep in mind that that greatest possible greatest common factor is not necessarily the true, greatest common factor. But it does set an upper limit for GCFs, and having that upper limit really reduces kids’ stress.Another example: find the GCF for 25 and 35.35 – 25 = 10, so 10 is the greatest possible GCF. But of course 10 does not go into 25 and 35, so 10 is not the GCF. Check the numbers less than 10, and you’ll see that 5 is the GCF. But no more checking above 10, as kids are likely to do, unless you tell them when to stop.

As an easy example, let’s say you need to find the GCF for 16 and 20.All you do is subtract 16 from 20, to get the difference, 4, and this number — 4 — is the largest number that could POSSIBLY go into both 16 and 20 evenly.Once you know that, just test 2, 3, and 4 to find the highest one that goes into 16 and 20. Of course that would be 4, so you got the GCF right off the bat, in this case.Keep in mind that that greatest possible greatest common factor is not necessarily the true, greatest common factor. But it does set an upper limit for GCFs, and having that upper limit really reduces kids’ stress.Another example: find the GCF for 25 and 35.35 – 25 = 10, so 10 is the greatest possible GCF. But of course 10 does not go into 25 and 35, so 10 is not the GCF. Check the numbers less than 10, and you’ll see that 5 is the GCF. But no more checking above 10, as kids are likely to do, unless you tell them when to stop.I have dubbed this mathematical object the GPGCF, for Greatest Possible Greatest Common Factor, and I’ve found

that students really appreciate learning it’s there — to alert them when it’s “quitting time.”

and this photo for your DP