84 The middle number of the 7 numbers is 42 The 7 numbers are -36, 38, 40, 42, 44, 46 and 48 Sum = 36 + 48 = 84 350g 12. 32. £24.50 13. 90 boys 33. A) 13 12 B) 13 19 Workings Substitute n =1 and n=2 for each question 58 14. 34. 115.5cm2 or 115.395cm2 A) 0.238kg B) 0.027l 154 or 153.86 = ½ mark 15. 35. C) 4289m D) 0.4mm 20 8/10 16. 36. 12 + 6 +2 = 20 squares A) No B) By drawing a pie chart showing the sales figure for 2014 is 120° and for 6 hours and 12 minutes 2015 is 240° (Sales doubled from 2014 to 2015) 17. 37. 3h 6min A) £2.72 B) 9 18. 38. A) term = 3n +1 nth B) 31 sticks 2h 50cm substitute n=10 19. 39. 8 litres 16 : 34 20. 40.
12. 84 The middle number of the 7 numbers is 42 The 7 numbers are -36, 38, 40, 42, 44, 46 and 48 Sum = 36 + 48 = 84 32. 350g 13. 90 boys 33. £24.50 14. A) 13 12 B) 13 19 Workings Substitute n =1 and n=2 for each question 34. 58 15. 115.5cm2 or 115.395cm2 154 or 153.86 = ½ mark 35. A) 0.238kg B) 0.027l C) 4289m D) 0.4mm 16. 8/10 36. 20 12 + 6 +2 = 20 squares 17. 6 hours and 12 minutes 37. A) No B) By drawing a pie chart showing the sales figure for 2014 is 120° and for 2015 is 240° (Sales doubled from 2014 to 2015) 18. A) £2.72 B) 9 38. 3h 6min 19. A) nth term = 3n +1 B) 31 sticks substitute n=10 39. 2h 50cm 20. 8 litres 40. 16 : 34
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