2025 O Level Math 4052 Paper 1 SUGGESTED MS

General Certificate of Education Ordinary Level 2025 Mathematics 4052/01 Syllabus 4052 Paper 1 SUGGESTED Solutions & Marking Scheme Mark Allocation Prepared by: Jordan Tew (@math_stuff_here) 1 1 2.41 B1 c.a.o. [1] 2 (a) 20 B1 (bi) Number of scones with 700 ml of milk 700 18 37150 3=  = Number of scones with 900 g of flour 900 28 26275 11=  = M1 26 scones A1 (bii) Amount of butter 60 26 1958=  = A1 FT from (b)(i) [4] 3 Total interest earned 2.4% $5250 4 $504=   = M1 Calculate interest Total after 4 years $5250 $504 $5754+= A1 [2] 4 Calculation B because both the mass of gold and cost per gram of gold are rounded up. B1 Rounded up o.e. [1] 5 (a) 3 4 9 17 6 21 cc c − = + −= M1 Isolate c 7 2c=− A1 o.e. (b) 8 12 2 3 4 (2 3) (2 3) ab a b a b b + − − = + − − M1 Grouping o.e. (4 1)(2 3)ab= − + A1 (c) 22 (4 3 )(3 4 ) 12 9 16 12 x y x y x xy xy y +− = + − − M1 Expand 2212 7 12x xy y= − − A1 [6]

General Certificate of Education Ordinary Level 2025 Mathematics 4052/01 Syllabus 4052 Paper 1 SUGGESTED Solutions & Marking Scheme Mark Allocation Prepared by: Jordan Tew (@math_stuff_here) 2 6 (a) 43 2(5 3) 14 42x−  + −  43 2(5 3) 14 and 2(5 3) 14 42xx−  + − + −  Splitting 43 2(5 3) 14 29 2(5 3) 29 532 35 52 7 2 x x x x x −  + − −  + −  + − − 2(5 3) 14 42 2(5 3) 56 5 3 28 5 25 5 x x x x x + −  + +   M2 M1 for each side solved correctly o.e. 7 52 x−   A1 o.e. (b) B1 Correct inequality FT from (a) [4] 7 (a) Correct perpendicular bisector with arcs B1 (b) Correct angle bisector with arcs B1 (c) Correct shaded area B1 [3]

General Certificate of Education Ordinary Level 2025 Mathematics 4052/01 Syllabus 4052 Paper 1 SUGGESTED Solutions & Marking Scheme Mark Allocation Prepared by: Jordan Tew (@math_stuff_here) 3 8 (a) (–3, 9) B1 c.a.o. (b) 22( 7) 10PQ = − +  M1 12.20655562 units 12.2 units (3 s.f.) = = A1 [3] 9 Let one side of the cube be x. 2 2 6 125 125 125 66 x xx = =  = M1 Find one side of the cube s.o.i. Volume of cube 3 3 3 125 6 95.09072179 cm 95.1 cm (3 s.f.) = = = A1 [2] 10 (a) 2x= , 3y= B1 (b) 315k = B1 [2] 11 (a) The increase in cost per litre of fuel from the end of May to the end of June may not be linear in nature , where the cost might have increased suddenly close to the end of June. B1 The increase is non-linear o.e. (b) In between months, there may be drastic hikes in the cost of fuel per litre, which is not shown on the graph. B1 Increases may not be shown o.e. (ci) The vertical axis does not start from zero. B1 Does not start from zero o.e. (cii) A