1) A prime number a) has one factor b) has exactly 2 factors: 1 and the number itself c) has more than 2 factors d) has exactly 2 factors: 2 and the number itself 2) Is 3 prime number or composite number a) composite b) prime 3) Prime Factorisation is the expression of a number as a product of? a) only prime numbers b) only composite numbers c) both prime and composite numbers 4) 2☓2☓2 is the prime factorization of a) 12 b) 6 c) 24 d) 8 5) Use a factor tree to find the prime factorisation of 32 a) 2☓2☓2☓2☓2 b) 2☓4☓4 c) 2☓2☓8 d) 2☓2☓2☓4 6) Use a factor tree to find the prime factorisation of 168 a) 2☓2☓2☓3☓7 b) 2☓2☓3☓7 c) 2☓3☓4☓7 d) 2☓2☓2☓2☓3☓7 7) Which is the smallest prime number? a) 5 b) 2 c) 0 d) 1 8) Two multiples of 30 are a) 40 and 80 b) 20 and 40 c) 60 and 90 d) 10 and 20 9) Which is the smallest composite number? a) 4 b) 2 c) 1 d) 3 10) 1 is neither prime nor composite number. a) True b) False

Prime Factorisation

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