Topic: gcf list of topics
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21 items are filed under this topic.

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	GCD		2017-11-25
		From A student: Suppose a,b, c are integers such that gcd(a,b)=gcd(a,c)=1. Show that gcd(a,bc)=1. Answered by Penny Nom.
	Abstract algebra		2017-11-25
		From A student: Suppose a,b, c are integers such that gcd(a,b)=gcd(a,c)=1. Show that gcd(a,bc)=1. Answered by Penny Nom.
	Baseball Cards		2017-04-20
		From Raquel: A minor league baseball team gave away baseball cards to each person entering the stadium. One group receives 28 baseball cards. A second group received 68 baseball card. If each person entering the stadium receive the same number of cards, what was the greatest possible number of baseball cards that each person could have received? Answered by Penny Nom.
	GCF		2008-05-19
		From Brenda: what is GCF????? =c Answered by Leeanne Boehm.
	GCF and LCD		2008-01-17
		From Peter: I need to know the differences between GCF and LCD. Answered by Penny Nom.
	Greatest common factor		2007-01-26
		From Alexis: What is the greatest common factor of 52,and 100? Answered by Penny Nom.
	The greatest common factor		2006-10-17
		From Myrna: What is the greatest common factor of 49,164 and 80,860 Answered by Stephen La Rocque.
	The greatest common factor of two numbers		2006-07-16
		From Fadwa: What is the greatest common factor(GCF) of the following algebraic expressions? 1680 and 6048 Answered by Stephen La Rocque.
	GCD		2006-03-20
		From Jana: How can i prove: if gcd(a,b)=1 then gcd(a+b,ab)=1 Answered by Penny Nom.
	GCF, LCM, primes and the ladder method		2006-01-07
		From Linda: How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.??? Answered by Penny Nom.
	GCD and LCM		2004-10-31
		From Cartalina: how do you calculate the "positive difference between the GCF and LCM of two numbers"? Answered by Penny Nom.
	GCD (a + b , a^2 - ab + b^2)		2004-08-27
		From Carol: Let a and b integer and relatively prime. Proof that: GCD (a + b , a^2 - ab + b^2) = 1 or 3 Answered by Penny Nom.
	Greatest Common Factor		2003-11-08
		From Beth: How do you use the Greatest Common Factor in addtion and subtraction of fraction? Answered by Penny Nom.
	The HCF and LCM of polynomials		2003-05-20
		From Charanpal: Question: Find the HCF and LCM of the polynomials given below. Verify that he productof these HCF and LCM differs from the product of the polynomials, if at all, by a factor of -1 1-x2 and x3 -1 1 - x2 and x4 - 1 Answered by Penny Nom.
	Some 5th grade problems		2003-01-24
		From Sabrina: [What is the greatest common factor of 20,28, and 36?] next problem is [5k+7(k+8)= ] next problem [Curtis simplified 0.8 divided by 0.2 x 0.04 and got 10. Latoya Simplified and got 1.6. is either correct? Can you explaine how you got the answer please.] Answered by Penny Nom.
	Reduce 79,537/3,623,420		2001-12-13
		From Eliana: How do you reduce 79,537/3,623,420. Answered by Claude Tardif.
	Greatest Common Factor		2001-05-09
		From Nicole: What is the Greatest Common Facter for: 126,261 1008,1080 546,1995 128,256 and 255,256 Answered by Penny Nom.
	Greatest common factor		2001-01-17
		From A teacher: I'm a teacher at a local Middle School and I would like the answers for the following questions. What is the greatest common factor for.. 546 and 780 156 and 732 . . . Answered by Leeanne Boehm and Penny Nom.
	A pair of numbers whose GCF is 28		2000-12-27
		From John: Name 2 different pairs of numbers whose GCF is 28. Answered by Penny Nom.
	Factoring, primes, GCF and LCM		2000-02-27
		From Ruth Kroek: My son is in grade seven, he has to do a Factoring Booklet the areas covered are: Prime #'s Composite #'s Rainbow Factoring Finding Multiples (consecutive multiples) Finding GCF of 2-3 numbers uning Rainbow factoring Finding LCM of 2 numbers using consecutive multiples prime factor trees prime factor ladders finding GCF of 2 numbers using Prime number Method Although his text 'Math Power' gives some information, we are at a loss .. Answered by Penny Nom.
	Greatest Common Factor.		1998-01-09
		From Percy Stribling: how do you figure out what the greater common factor is? Answered by Penny Nom.

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