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7 Cards in this Set

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LCM

Least Common Multiple

Prime Factorization
Breaking down a whole number into its prime factors. e.g. 12 = 2x2x3

Breaking down a whole number into its prime factors. e.g. 12 = 2x2x3

How to find LCM of two numbers
  1. Find Prime Factors of both numbers e.g. 12 = 2x2x3; 4 = 2x2
  2. Take one of each duplicated prime factor and add the rest as factors e.g. lcm(12,4) = 2x2x3 = 12

Is the number one (1) a prime factor?

It is neither prime nor composite. It is called a unit.

Best use of LCM

Addition and subtraction of fractions

Three types of fractions
  1. Proper Fraction ( numerator < denominator). e.g. 3/5
  2. Improper fraction (numerator > denominator 5/3 )
  3. Mixed fraction (Whole number & fraction e.g. 3 2/3)

Denominator is also called the ____________.

Divisor