Sub Title Factors and Multiples Chapter 3: Conquering SAT Math.
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Factors and Multiples Chapter 3: Conquering SAT Math
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Transcript of Sub Title Factors and Multiples Chapter 3: Conquering SAT Math.
Factors and MultiplesChapter 3: Conquering SAT Math
Greatest Common Factor (GCF)Lease Common Multiple (LCM)
• A factor of a whole number divides the number, with no remainder.
• Example: Is 6 a factor of 50?8
6 50
48
2The answer is no.
Primes and Composites
• A prime number is a positive integer that has exactly two factors, one and itself.
• A composite is a positive integer that has more than two factors.
example: Is 20 a prime or composite number?
The factors of 20 are {1, 2, 3, 4, 10, 20}.
Therefore, 20 is a composite number.
The GREATEST COMMON FACTOR (GCF) of two numbers is the largest factor the two numbers have in common.
