Q Answer Mark Comments 8(a) 3(x 5) B1 – 8(b) B2 B1 for 2 correct terms. 5y + 20t 10 – Penalise any incorrect further working. Eg 5y + 20t 10 = 25yt 10 is B1 – – 5y + 20t 1 = 25yt 1 is B0 (error in – – expansion and incorrect further work) 5y + 20t 10 = 5(y + 4t 2) given as – – answer is B1 as shows a misunderstanding of expanding brackets. 8(c) 3w + 6 = 2w 1 M1 – w + 2 = w – M1 3w 2w = 6 – –1 – This mark is for rearranging their expansion correctly to get w terms one side and number = terms on the other. 2 (oe) w w – – – A1ft ft on one error –7
Q Answer Mark Comments 8(a) 3(x – 5) B1 8(b) 5y + 20t – 10 B2 B1 for 2 correct terms. Penalise any incorrect further working. Eg 5y + 20t – 10 = 25yt – 10 is B1 5y + 20t – 1 = 25yt – 1 is B0 (error in expansion and incorrect further work) 5y + 20t – 10 = 5(y + 4t – 2) given as answer is B1 as shows a misunderstanding of expanding brackets. 8(c) 3w + 6 = 2w – 1 M1 w + 2 = w – 3w – 2w = –1 – 6 M1 This mark is for rearranging their expansion correctly to get w terms one side and number terms on the other. w – w = – – 2 (oe) –7 A1ft ft on one error