1) Factors of 20. a) 1, 2, 4, 5, 10, 20 b) 1, 2, 3, 4, 5, 10, 20 c) 2, 4, 5, 10, 20 2) Prime factors of 18. a) 1, 2, 3, 6, 9, 18 b) 1, 2, 3, 6, 9 c) 2 & 3 3) x and y are factors of 30. Find the value of x and y. a) x =4, y = 5 b) x = 1, y = 15 c) x= 2, y = 18 4) Determine the common factors of 12 and 15. a) 1,2, 3, 4, 5, 6 b) 1 and 3 c) 2 and 3 5) List the common factors of 12, 18 and 24 a) 1, 2, 3, 6 b) 1, 2, 3, 4, 6 c) 1, 2, 3, 4, 6, 12, 24 6) Highest common factors (HCF) of 8 and 12.. a) 1 and 2 b) 3 c) 4 7) Highest common factors (HCF) of 15, 24, 30 a) 2 b) 3 c) 4 8) List the first five multiples of 4. a) 4,6, 8, 12, 16 b) 4, 8, 12, 16, 20 c) 4, 8, 12, 15, 20 9) List all the multiples of 7 which are less than 40. a) 7, 12, 19, 28, 35 b) 7, 13, 20, 27, 34 c) 7,14, 21, 28, 35 10) Find Lowest common multiple of 2, 3 and 4. a) 12 b) 15 c) 18 11) Find lowest common multiple of 5, 8 and 10. a) 20 b) 30 c) 40 12) Diagram shows cupcakes baked by Amira and Zahira. They are planning to arrange the cupcakes into a few boxes to sell. How MANY CUPCAKES should be load in each box if they use the same size of box? a) 2 b) 3 c) 6 13) A box of pens can be divided equally to 15 students, 30 students or 40 students. Find the largest possible number of pens in the box. a) 150 b) 120 c) 80

FORM 1 FACTORS & MULTIPLES

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