Today we learned about Greatest Common Factors (GCF) and Least Common Multiples (LCM). A Greatest Common factor is the largest number that can divide into a given set of numbers. For example the Greatest Common Factor for 12, 36 and 80 would be 4. A strategy you can use to find these would be to find the prime factors for the numbers, then list each common factor the least amount of times it appears in one number. (You can find prime factors by making a factor tree where you put the number you want to factor at the top then divide it into numbers that when multiplied make up the original number and repeat for each subsequent number until you end up with only prime numbers.) A least common multiple is the smallest non zero number that two or more whole numbers can be multiplied into. For example the multiple For 8 would be 0, 8, 16, 32, 64. There are three different strategies you may use when trying to find an LCM, These three strategies are found on page 13, 14 and 15. A strategy that I find to work well is the third one, the one Mrs.B prefers ( on page 15).
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Find your green dot!AuthorsWe are members of Esquimalt High School's Gifted Math 10 class. Most of us like Hi-Chews. Archives
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