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Name__________________________ Least Common Multiple (Compare, Add, and Subtract Fractions) #1 Divisible? If so, the LCM is the larger of the 2 numbers. #4 Ladder Method – pull out all prime numbers starting with 2. Once you exhaust a number, move to the next prime number. #2 Listing multiples #5 Euclid’s Method #3 Prime factorization (factor trees) – be sure to write in exponential notation! #6 Calculator (TI-34 II) - 2nd key, math (yellow) - Scroll over until you see “lcm” & hit enter key - Type in 1st number - 2nd key, comma key (yellow) - Type in 2nd number - Enter
