SST 2025 EMATH PRELIM P1 MS

[Turn over 1 SECONDARY 4 2025 PRELIMINARY EXAMINATION MATHEMATICS Paper 1 4052/01 26 August 2025 (Tuesday) 2 hour 15 minutes CANDIDATE NAME CLASS S 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 , use either your calculator value or 3.142. This document consists of 28 printed pages including the cover page. For Examiner’s Use Q1 2 Q2 4 Q3 4 Q4 6 Q5 2 Q6 3 Q7 4 Q8 3 Q9 3 Q10 3 Q11 2 Q12 4 Q13 4 Q14 2 Q15 4 Q16 6 Q17 5 Q18 5 Q19 4 Q20 6 Q21 2 Q22 8 Q23 4 Total 90 Solution

2 Mathematical Formulae Compound Interest Total amount = P Mensuration Curved surface area of a cone = rl Surface area of a sphere = 4r2 Volume of a cone = r2h Volume of a sphere = r3 Area of triangle ABC = ab sin C Arc length = r, where  is in radians Sector area = r2, where  is in radians Trigonometry a2 = b2 + c2 − 2bc cos A Statistics Mean = Standard deviation = n r      + 1001 3 1 3 4 2 1 2 1 C c B b A a sinsinsin ==   f fx 22      −     f fx f fx

[Turn over 3 Answer all the questions. 1.  = { integers 𝑥 ∶ 3 < 𝑥 < 18 } 𝑃 = {multiples of 5} 𝑄 = {perfect squares} (a) List the elements in (𝑃 ∪ 𝑄)′ . 𝑃 ∪ 𝑄 = {4, 5, 9, 10, 15, 16} (𝑃 ∪ 𝑄)′ = {6, 7, 8, 11, 12, 13, 14, 17} Answer …………………….……. [1] (b) On the Venn diagram, shade the region which represents (𝑃 ∩ 𝑄) ∪ (𝑃 ∩ 𝑄′). Answer [1]

4 2. (a) Use prime factors to explain why 18 × 63 is not a perfect square. Answer 18 = 2 × 32 63 = 7 × 32 18 × 63 = 2 × 32 × 7 × 32 18 × 63 = 2 × 34 × 7 Since the indices of the prime factors of 18 × 63 are not all even numbers, 18 × 63 is not a perfect square. ……………...…………………………………………………………….….… …………...…………………………………………………………….….…… …………...…………………………………………………………….….…… [2] (b) The n