given the following numbers, find their greatest common factor(GFC).
16 20
2006-09-04 14:53:15 · 14 answers · asked by Lori 1 in Science & Mathematics ➔ Mathematics
Answer: 4
Factors of 16 = 1, 2, 4, 8, 16
Factors of 20 = 1, 2, 4, 5, 10, 20
The greatest one they have in common is 4.
2006-09-04 14:55:21 · answer #1 · answered by MsMath 7 · 0⤊ 1⤋
4
2006-09-04 15:05:11 · answer #2 · answered by wickink 2 · 0⤊ 0⤋
4
2006-09-04 14:58:21 · answer #3 · answered by Snail Bunny 2 · 0⤊ 0⤋
4
2006-09-04 14:55:38 · answer #4 · answered by Vincent G 7 · 0⤊ 0⤋
To find the GCF of two numbers, first list the prime factors of each number.
16=2*2*2*2
20=5*2*2
Then multiply those factors both numbers have in common.
Both 16 and 20 have 2*2 as factors.
2*2 = 4
So, the greatest common factor for 16 and 20 is 4.
If there are no common prime factors, the GCF is 1.
;-D I hate math!
2006-09-04 14:56:35 · answer #5 · answered by China Jon 6 · 0⤊ 0⤋
it's 4
2006-09-04 14:57:46 · answer #6 · answered by fjorin15 1 · 0⤊ 0⤋
the greatest common factor is the biggest number you can divide both of the given numbers by and get whole numbers. in this case, the greatest common factor would be 4.
2006-09-04 14:56:54 · answer #7 · answered by ? 3 · 0⤊ 0⤋
That means the highest number you can divide them BOTH by. Just think about it and you will see that 4 is the highest number you can divide both by.
2006-09-04 14:56:38 · answer #8 · answered by hayharbr 7 · 1⤊ 0⤋
the answer is four because twenty divided by five equals four and sixteen divided by four is four so the greatest common factor is four
2006-09-04 15:11:12 · answer #9 · answered by bestfriendsforever248953 2 · 0⤊ 0⤋
its 4, no doubt
cuz its the highest number it can be divided into
2006-09-04 15:00:13 · answer #10 · answered by veryberry 3 · 0⤊ 0⤋