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### Grade 8 - Mathematics5.12 Greatest Common Factor - (Prime Factorization Method)

 Example: Find the G.C.D. of 24, 30 and 42 using prime factorization method. Solution: Prime factors of 24 = 2 * 2 * 2 * 3 Prime factors of 30 = 2 * 3 * 5 Prime factors of 42 = 2 * 3 * 7 The common terms are 2 and 3 Therefore, the G.C.D. of 24, 30 and 40 is the product of their common factors = 2 * 3 = 6 Directions: Solve the following problems using prime factorization method. . Also write at least ten examples of your own.
 Q 1: Find the G.C.D. of 128, 256 and 384 using prime factorization method.6412848 Q 2: Find the G.C.D. of 28, 48 and 68 using prime factorization method.6412 Q 3: Find the G.C.D. of 12, 16 and 20 using prime factorization method.6412 Q 4: Find the G.C.D. of 12, 44 and 58 using prime factorization method.1224 Q 5: Find the G.C.D. of 126, 186 and 226 using prime factorization method.8216 Q 6: Find the G.C.D. of 6, 12 and 24using prime factorization method.6812 Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!