SST 2025 EMATH PRELIM P2 MS

[Turn over SECONDARY 4 2025 PRELIMINARY EXAMINATION MATHEMATICS Paper 2 4052/02 27 August 2025 (Wednesday) 2 hour 15 minutes CANDIDATE NAME Student’s version CLASS 4 - INDEX NUMBER Candidates answer on the Question Paper. READ THESE INSTRUCTIONS FIRST Write your full name, class and index number in the spaces above. Write in dark blue or black pen in the space provided for each question. You may use a HB pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all the questions. The number of marks is given in brackets [ ] at the end of each question or part question. If working is needed for any question, it must be shown in the space below the question. Omission of essential working will result in loss of marks. The total of the marks for this paper is 90. The use of an approved scientific calculator is expected, where appropriate. If the degree of accuracy is not specified in the question and if the answer is not exact, give the answer to three significant figures. Give answers in degrees to one decimal place. For p, use either your calculator value or 3.142. This document consists of 24 printed pages including the cover page. For Examiner’s Use Q1 10 Q2 12 Q3 10 Q4 11 Q5 10 Q6 9 Q7 10 Q8 8 Q9 10 Total 90

2 Mathematical Formulae Compound Interest Total amount = P Mensuration Curved surface area of a cone = prl Volume of a cone = pr2h Volume of a sphere = pr3 Area of triangle ABC = ab sin C Arc length = rq, where q is in radians Sector area = r2q, where q is in radians Trigonometry a2 = b2 + c2 - 2bc cos A Statistics Mean = Standard deviation = n r ÷ ø ö ç è æ+ 100 1 31342121 C c B b A a sinsinsin == å å f fx 22 ÷÷ ø ö çç è æ- å å å å f fx f fx Surface area of a sphere = 4pr2

[Turn over 3 Answer all the questions. N1 (N1.7 & N1.8) : Numbers and Operations [10] N2 (N2.2 & N2.4) : Ratio and Proportion N3 (N3.4) : Percentage 1. (a) (i) The number of electric cars produced in country Y by company X in 2015 was 3 857 000. Write this number in standard form. Answer 3.857×10! [1] (ii) In 2005, 2.96 million electric cars were produced in country Y. Calculate the percentage increase in the car production from 2005 to 2015. Answer Percentage increase =".$%&×()!*+.,!×()!+.,!×()!×100% =30.3% (3 significant figures) (iii) In 2015, 84.7% of all cars produced in country Y were non-electric cars. Calculate the total number of cars produced in 2015, giving your answer to the nearest million. Answer Total cars in 2015 =".$%&×()!𝟏𝟎𝟎*𝟖𝟒.𝟕×100 =2.5209×10& =25 million cars (nearest million) Or 25 000 000 (iv) In 2015, there were 420 cars per 1000 people in country Y. Estimate the population of the country in 2015. Give your answer in standard form correct to