Welcome to your Factors and Multiples(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. How many multiples does 10 have? 100 An infinity 4 9 2. The highest common factor (HCF) of 10 and 20 is 2 10 5 4 3. What is the greatest common factor of 12 and 18? 9 2 4 6 4. The lowest common multiple, or LCM, of 4 and 7 is 56 False True 5. The number 1 is _______ Neither a Prime or Composite number A Composite number A Prime number Both a Prime and Composite number 6. Six has all the following factors... 1, 2, 3, 6 3, 4, 5 3, 6, 12, 18 2, 4, 6 7. A number is a multiple of 6 if _____ The last digit is 6 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 Its last two digits form a number divisible by 6 8. Find the LCM of 32 and 48 9. The following are all factors for the number 12 except? 6 4 5 3 2 10. What are the first three prime numbers? 1, 2, 3 None of the above 2, 3, 5 0, 1, 2 11. Find the HCF of 5y, 30xy, and 40ay. 5y 120y 40ay 75ay3x 75y 12. The lowest common multiple, or LCM, of 4 and 7 is 13. A properly done factor rainbow will not show us all the factors of a number. False True 14. Of the following list of numbers : 2,3,4,7,8,11,12, which are Composite numbers? 4,8,12 4,11,12 2,3,7 2,3,4 15. Which of the following lists the prime factorization of the number 28? 2,2,3 2,2,7 2,14 2,4,6 16. The factors of 28 are.. 1, 6, 28 7, 14, 21 2, 4, 7, 14 1, 2, 4, 7, 14, 28 17. Which two numbers are relatively prime? 30 and 45 21 and 56 18 and 27 9 and 16 18. Which is the greatest common factor of 45 and 60? 45 5 30 15 19. The factors of 36 include... 2, 4, 8 12, 15, 36 1, 6, 36 1, 13, 18 20. What is the HCF of 24 and 36? 6 9 4 12 1 out of 20 Time is Up! Time's up