## Dawson4070 Group Title Can anyone show me how to find the GCF of 72 and 78? one year ago one year ago

1. gdogthegirl Group Title
2. Dawson4070 Group Title

Hello, thanks for responding to my question.

3. Dawson4070 Group Title

Are you there?

4. Dawson4070 Group Title

Hello and thanks for responding

5. nphuongsun93 Group Title

$72 = 2 \times 2 \times 2 \times 3 \times3$$78 = 2 \times 3 \times 13$what factors do 72 and 78 have in common?

6. Dawson4070 Group Title

2 and 3

7. nphuongsun93 Group Title

so GCF = 2 * 3 ~

8. Dawson4070 Group Title

Wowwww, so its the numbers 2 and 3, not just one of the numbers?

9. nphuongsun93 Group Title

2 times 3 = 6 = gcf ~ 6 is the gcf

10. Dawson4070 Group Title

So is 6 the GCF for both numbers

11. nphuongsun93 Group Title

yes

12. Dawson4070 Group Title

now that was a little confusing!! lol

13. nphuongsun93 Group Title

72 can divide by 1, 2, 3, 4, 6, 8, 12, 18, 24, 36, 72 78 can divide by 1, 2, 3, 6, 13, 26, 39, 78. so 6 is the greatest common factors

14. nphuongsun93 Group Title

the way i did earlier was |dw:1348610984777:dw|

15. Dawson4070 Group Title

I got all your notes.. I have one more of these... GCF of 42 and 48.. I'm going to post this question. Maybe you will be able to come back.

16. nphuongsun93 Group Title

we can do that here if you want ~ ur turn to write down factors of 42 and 48, or all the numbers they can divide

17. Dawson4070 Group Title

when I add another question , it doesn't save the second question to my file/folder. I need to post the question, Give me a second.