Big Ideas Math: Modeling Real Life, Grade 6
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Big Ideas Math: Modeling Real Life, Grade 6 View details
5. Least Common Multiple
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Exercise 3 Page 31

Find the product of the common prime factors.

38

Practice makes perfect
The greatest common factor (GCF) is the greatest number that is a factor of two or more numbers. The first step for finding a GCF is to break down each number into its prime factors. We will write down all of the prime factors that are common between the given numbers.
Given number Prime Factorization Common Prime Factors
38 2* 19 2, 19
76 2* 2 * 19 2, 19
114 2 * 3 * 19 2, 19

For the given values, the common prime factors are 2 and 19. The next step is to calculate the product of these factors. 2* 19 = 38