1) The third multiple of 6 is a) 81 b) 18 c) 64 2) The prime factorization of 48 is a) 2 x 2 x 2 x 2 x 3 b) 8 x 6 c) 4 x 12 3) The common factors of 15 and 30 is a) 1, 3, 5, 15 b) 5 and 15 c) 15 and 30 4) Every number has atleast ______ factors a) 1 b) 2 c) 3 5) The factors of 75 are _______ a) 1, 2, 3, 4, 5, 15, 75 b) 1, 3, 5, 15, 25, and 75. c) 1, 3, 5, 15 and 75. 6) 3 is a multiple of 9 a) True b) False 7) Find the first five multiples of 15 are a) 30, 45, 15, 75, 25 b) 15, 30, 45, 60, 75 c) 45, 60, 75, 90 8) Which of the following numbers are divisible by 2 a) 1322 b) 2810 c) 4755 d) 9804 e) 1905 9) 500 is a multiple of 30 a) True b) False 10) The common 2nd and 3rd common multiple of 20 and 30 a) 60, 120, b) 20, 30 c) 120, 180 d) 30, 60

Grade 4 - Revision: Factors & Multiples

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