Question

Can anyone show me how to do the GCF for 42 and 48, with all the steps?

Answer 1

Okay, so GCF is the 'greatest common' factor which means what's the highest number that goes into both 42 and 48. Any ideas?

Answer 2

ok.. let me think about that

Answer 3

22/24 maybe

Answer 4

heyyyyyy

Answer 5

welcome back..and thanks for coming back

Answer 6

no

42 can divide 1, 2, 3, 4, 6, 7, 14, 21, 42
48 can divide 1, 2, 3, 4, 6, 8, 12, 24, 48
what's greatest common number they can both divide to?
or

42 = 2 * 3 * 7
48 = 2 * 2 * 2 * 2 * 3
what factors do they have in common?

Answer 7

What you can do is write down 42 and 48 on a scrap piece of paper. Starting with 42, write down all the numbers that divide evenly into it:

So we have 1, 2, 3, 6, 7, 14, 21, and 42 -- these are all numbers that go evenly into 42 (no remainder.)

So what are all the number that go into 48?

Answer 8

They have 2 and 3 in common

Answer 9

After you come up with your list of numbers that go into 48, find the highest number that appears in both lists.

Answer 10

@nphuongsun93 4 doesn't go into 42 evenly.

Answer 11

So take 4 out of this

Answer 12

honest misstake.. we all make them.. at least I do.. that's why I'm here.
So I need to remove the 4 from 42

Answer 13

Hello are you still here

Answer 14

You both left me, and I don't have a clue. Can someone please come back and help me.

Answer 15

Okay, so list out all the numbers that divide evenly into 48. We know 1 goes into it because 48 times 1 is 48 (48 goes into it too.)

So you can write down 1 and 48. What else goes into 48? Does 2? Does 3?

Answer 16

Wowwwwwwwwwwww, what happened? Why did you both leave me?

Answer 17

let me get a pencil

Answer 18

I just popped out for a second to reply to another question. Don't worry. I'm still here. I get a notification every time you respond, so I'm not really leaving. :)

Answer 19

1,2,3,4,6,8

Answer 20

all go into 48 evenly

Answer 21

12

Answer 22

Sweet okay, now look at the list of numbers that go into 42:
1, 2, 3, 6, 7, 14, 21, and 42

What is the highest number that appears on both lists?

Answer 23

did I list all of the correct number for 48?

Answer 24

Hmm let's see
48:
1,2,3,4,6,8,12,16,24,48

Answer 25

I see you got a big portion of them. Think about it this way. 48 divided by 2 is what? 24. So both 2 and 24 go into 48.

Answer 26

I left out 16 and 24

Answer 27

Yep, okay compare the two lists: the list for the numbers that go into 42 and the list of numbers that go into 48.

Cross off ALL the numbers that don't appear on BOTH lists, keeping only the numbers that DO appear on both lists.

Answer 28

1,2,3,6, appear in both on my list.. hopefully I have all the correcct numbers in both list

Answer 29

Okay so what's the highest number?

Answer 30

Can you give all of the numbers for both list... so I can make sure I have all the correct numbers.? Thanks

Answer 31

6 is the highest number in both list.. if I have all the corrrrect numbers.

Answer 32

You're right, the GCF is 6. What numbers do you have?
We got these for 42 earlier:
1, 2, 3, 6, 7, 14, 21, and 42

And these for 48:
1,2,3,4,6,8,12,16,24,48

Answer 33

Thanks!!

Answer 34

No worries, mate. :)

Answer 35

Ok! Just wanted make sure I had all the numbers.

Answer 36

Hello, are you still here?

Answer 37

Did you leave again?

Answer 38

Yep, I'm here. What's up?

Answer 39

did you see my my response to your last question?

Answer 40

is 6 the largest number in the list for both numbers 48 and 42

Answer 41

You're right, the GCF is 6.

Answer 42

ok.. sow what do I do now? Am I done with this problem?

Answer 43

Yep! All you needed to do was calculate the GCF for 42 and 48. The greatest common factor is 6.

Greatest common factor is just a fancy way of saying, "the highest number that divides evenly into two (or more) numbers."

Answer 44

ok Thanks