what is the gcf of each pair...
49 and 63
24 and 64
25 and 75
27 and 54
21 and 49
36 and 54
2007-03-10 12:13:06 · 9 answers · asked by dromaister 2 in Science & Mathematics ➔ Mathematics
1. 7
2. 8
3. 25
4. 27
5. 7
6. 18
Hope this helps
2007-03-10 12:17:21 · answer #1 · answered by Anonymous · 0⤊ 0⤋
To find the GCF you have to factor the pair of numbers and multiply together the factors that are present in both of the pair of numbers.
49: 7, 7
63: 3, 3, 7
They have one 7 in common. GCF = 7
24: 2, 2, 2, 3
64: 2, 2, 2, 2, 2, 2
They have two 2s in common. GCF = 2 times 2 times 2 = 8
2007-03-10 20:19:38 · answer #2 · answered by ecolink 7 · 0⤊ 0⤋
To find the greatest common factor, you list the prime factors of each number:
49 --> 7 * 7
63 --> 7 * 3 * 3
Then you multiply whatever factors you have that are in common. For this problem, there is only a 7 in common so the GCF is 7.
You can apply this to the rest of your problems.
Good luck!
2007-03-10 20:21:33 · answer #3 · answered by Anthony A 3 · 0⤊ 0⤋
1. 7
2. 8
3.25
4.27
5. 7
6. 18
I think these are right!
2007-03-10 20:53:43 · answer #4 · answered by doug t 2 · 0⤊ 0⤋
im not very good at this but top im person in math in my class and i think it is..........49 and 63
2007-03-10 20:37:08 · answer #5 · answered by syd 1 · 0⤊ 0⤋
1----------> 7
2------------> 8
3-----------> 25
4-----------> 27
5-----------> 7
6-----------> 18
2007-03-10 20:22:30 · answer #6 · answered by curious 4 · 0⤊ 0⤋
7
8
25
27
7
18
2007-03-10 20:17:56 · answer #7 · answered by physicist 4 · 0⤊ 0⤋
7
8
25
9
7
9
I think.. it was with no paper.. xD
2007-03-10 21:00:44 · answer #8 · answered by jjfine96 2 · 0⤊ 0⤋
it's too easy!!
2007-03-10 20:20:16 · answer #9 · answered by ABCDEFGHIJKLMNOPQRSTUVWXYZ 2 · 0⤊ 0⤋