Mathematics > GCSE MARK SCHEME > Mark Scheme (Results) January 2022 Pearson Edexcel International GCSE Mathematics A (4MA1) Paper 2H (All)
Mark Scheme (Results) January 2022 Pearson Edexcel International GCSE Mathematics A (4MA1) Paper 2H
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International GCSE Maths Apart from questions 2, 7, 10, 11, 17, 18, 21b and 26 the correct answer, unless clearly obtained by an incorrect method, should be taken to imply a correct method Q Workin... g Answer Mark Notes 1 (a) 2y − 4 y + 8 − y2 2 M1 for 3 correct terms or for 4 correct terms ignoring signs or ... − 2 y − y2 or 8 − 2 y −... 8 − 2 y − y2 A1 Any order but simplified (b) 5b3c(3b2 − 7c8) 2 B2 fully correct or B1 for a correct partial factorisation with at least two terms outside the bracket eg 5b3(3b2c − 7c9) or 5c (3b5 – 7b3c8) etc or the fully correct factor outside the bracket with a two term expression in terms of b and c inside the bracket eg 5b3c(15b2 − c8) Total 4 marks https://britishstudentroom-b430a.web.app/2 eg 27 and 18 4 7 3 M1 Both fractions expressed as improper fractions. 27 7 oe 4 18 or eg 189 72 28 28 M1 Invert 2nd fraction or for both fractions expressed as equivalent fractions with denominators that are a common multiple of 4 and 7 (seeing this stage gains M2) eg 27 7 = 189 = 21 = 2 5 4 18 72 8 8 or 27 7 = 189 = 2 45 = 2 5 4 18 72 72 8 2 7 3 7 21 5 or = = 2 4 1 8 2 8 8 or 189 72 = 189 = 2 45 = 2 5 oe 28 28 72 72 8 if the student clearly shows 2 5 = 21 then they 8 8 only need to complete the LHS to 21 (often 8 done in 1st line of working) shown A1 dep M2 conclusion to 2 5 from 8 correct working – either sight of the result of the multiplication e.g. 189 must be seen then cancelled 72 or correct cancelling prior to the multiplication with 21 seen. 8 NB entire solution using decimals scores no marks. Total 3 marks https://britishstudentroom-b430a.web.app/3 (a) 12 (= 3) or 4 (= 0.3) or BC = 16.5 4 12 4 12 or BC 16.5 = 4 12 or (BC =)16.5 12 oe 4 2 M1 correct scale factor (given as 3 or a fraction or a ratio) or correct equation using BC or a correct expression for BC (award for SF even if not used) 5.5 A1 (b) 3x 1 B1 allow 3 × x or x × 3 ft their “3” in (a) Total 3 marks 4 (a) 17.75 1 B1 oe (b) 18.25 1 B1 • oe 18.249 (allow 18.249…) • SC B1 for 17.5 in (a) and 18.5 (or 18.49 )in (b) Total 2 [Show More]
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