Welcome to your Factors and Multiples(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. A number is a multiple of 6 if _____ The sum of all of its digits is divisible by 6 The sum of all its digits is divisible by 3 and the last digit is even The last digit is 6 Its last two digits form a number divisible by 6 2. Which list is made up of multiples of 7? 7, 14, 70 19, 26, 33 21, 35, 52 14, 25, 35 3. Of the following list of numbers : 2,3,4,7,8,11,12, which are Composite numbers? 2,3,4 2,3,7 4,8,12 4,11,12 4. A properly done factor rainbow will not show us all the factors of a number. True False 5. Which of the following is a multiple of 16? 8 27 64 88 6. What is the LCM of ab^{2} and a^{2}b^{3}? ab a²b³ a²b² ab² a²b 7. The factors of 28 are.. 2, 4, 7, 14 1, 6, 28 7, 14, 21 1, 2, 4, 7, 14, 28 8. Which two numbers are relatively prime? 9 and 16 18 and 27 21 and 56 30 and 45 9. Seven is a factor of... 14, 27 and 72 37, 47 and 57 21, 28 and 42 1, 7 and 14 10. What is the HCF of 24 and 36? 4 9 6 12 11. Which number is a factor of 111? 3 21 11 9 12. Find the LCM of 32 and 48 13. A factor tree is a great way for us to find the prime factors, or prime factorization, of a number. True False 14. The following are all factors for the number 12 except? 2 5 3 4 6 15. Which set of numbers are all Primes? None of the above 33, 29, 41, 3 63, 71, 43, 81 5, 23, 11, 37 16. Find the HCF of 5y, 30xy, and 40ay. 75y 40ay 120y 5y 75ay3x 17. Which of the following are factors of 1710? 2,5,7,10 2,4,5,10 2,3,5,10 2,3,5,8,10 18. Which pair of numbers has 60 as their least common multiple? 10 and 6 12 and 30 30 and 45 40 and 60 19. What is the greatest common factor of 12 and 18? 6 9 4 2 20. Six has all the following factors... 2, 4, 6 3, 6, 12, 18 1, 2, 3, 6 3, 4, 5 1 out of 20 Time is Up! Time's up