1) Here are some numbers: 1, 2, 3, 4, 5, 6, 7. Which of these numbers are factors of 24. a) 1, 2, 3, 5, 7 b) 1, 2, 3, 4, 6 c) 2, 3, 4, 5, 6 d) 2, 3, 4, 6, 7 2) 1 is a factor of: a) Only 1 b) Only 0 c) All the numbers d) None 3) 6th multiple of 9: a) 48 b) 56 c) 88 d) 54 4) The first four multiples of 7 are: a) 7, 9, 11, 13 b) 35, 42, 49, 56 c) 1, 2, 3, 5 d) 7, 14, 21, 28 5) The smallest common multiple of 10 and 5 is: a) 18 b) 15 c) 10 d) 5 6) 18, 24 and 30 are all multiples of three. a) True b) False c) None d) All 7) Which are the first three common multiples of 6 and 4? a) 5, 16, 17 b) 12, 24, 36 c) 67, 40, 36 d) 16, 17, 20 8) Which of the following statements are also true?  a) 7 is a multiple of 56 b) 7 is a factor of 56 c) 10 is a factor of 56. d) None e) All of the above 9) Which equation best shows that 5 is a multiple of 11? a) 55=44+11 b) 11×5=55 c) 11 ÷ 55= 5 d) 55-11=44 10) Which of the following shows only multiples of 8? a) 4, 8, 12, 16, 20, 24, 28 b) 1, 2, 4, 8 c) 16, 24, 32, 40 d) None

Factors, multiples, and common multiples

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