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## Prime Factorization

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**Find the prime Factorization of the following:**21 130 84 3 x 7 2 x 5 x 13 2 x 2 x 3 x 7**The Combination for the lock on Jacoby’s suitcase is based**on the prime factorization of 315. What is the combination? 5 x 7 x 9 3 x 7 x 15 3 x 3 x 5 x 7 2 x 3 x 3 x 5 x 7 c. 3 x 3 x 5 x 7**Chris left out one prime factor when he wrote this prime**factorization for 168. 2 x 2 x 2 x 3 x What is the missing prime factor? 2 3 5 7 7**Logan left out one prime factor when she wrote this prime**factorization for 1092. 2 x 2 x x 7 x 13 What is the missing prime factor? 2 3 7 13 3**The combination lock is a 3-digit number. The digits are**the prime factors of 42 listed from greatest to least. What is the combination for the lock? 7 - 3 - 2**What are the first 10 multiples for 4?**4,8,12,16,20,24,28,32,36,40 What are the first 10 multiples for 10? 10,20,30,40,50,60,70,80,90,100 What numbers appear in both lists? 20 and 40 What is the Least Common Mutliple? 20**Find the Least Common Multiple for each set of numbers:**5 and 20 6 and 15 12 and 30 20 30 60**Mark purchases materials to make watches for a jewelry show.**There were 6 watch faces in a pack and 9 watch bands in a pack. What is the least number of watches Mark can make without having any supplies left over?**Kaley purchases materials to make dog collars for a pet**show. There are 6 buckles in a pack and 8 straps in a pack. What is the least number of dog collars Kaley can make without having any supplies left over?**Pencils are sold in packages of 10, and erasers are sold in**packages of 6. What is the least number of pencils and erasers you can buy so that there is one pencil for each eraser with none left over?