TKSS 2022 Sec 1 EOY Maths P1

This document consists of 10 printed pages. CANDIDATE NAME MATHEMATICS 4052/01 Paper 1 Thursday 6 October 2022 1 hour 15 minutes Candidates answer on the Question Paper. READ THESE INSTRUCTIONS FIRST Write your name, class and register number on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid/tape. Answer all questions. If working is needed for any question it must be shown with the answer. Omission of essential working will result in loss of marks. 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, unless the question requires the answer in terms of . At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. The total of the marks for this paper is 50. TANJONG KATONG SECONDARY SCHOOL Year End Examination 2022 Secondary 1 CLASS INDEX NUMBER For Examiner’s Use

2 4052/Sec1YearEnd2022 [Turn over 1 (a) Calculate 376 4.37 1.82 0.195   , giving your answer correct to 4 significant figures. Answer...………………………………… [1] (b) Mike evaluates 150.91 29.8 using a calculator and he says that the answer is 8407.136. Without doing the actual calculation, use estimation to determine whether Mike’s answer is reasonable. Answer .…… .………...……………………………...……………………… ……… … …………………...……………………………...………………………… …… .… .… .[2] 2 (a) Solve the inequality 1 2 5 13x x x     . Answer...………………………………… [3] (b) Hence, write down the smallest integer x which satisfies the inequality above. Answer x = ……………………………… [1]

3 4052/Sec1YearEnd2022 [Turn over 3 (a) Given that 28 20 9 12x y x y   , find the value of x y . Answer x y = ..…………………………… [2] (b) (i) Factorise 15 9 18 30a b bk ak   completely. Answer...………………………………… [2] (ii) By factorising 2t t , show that it is always even for all positive integers of t. Answer .…… .………...……………………………...………………………………… …………………...……………………………...……………………………… .… … [2] 4 (a) Write down the next two terms in the sequence, 1 2 3 4, , , , ...4 9 16 25 . Answer...………………………………… [1] (b) Write down an expression, in terms of n, for the nth term of the sequence. 8, 5, 2, 1, 4, ...  Answer...……………………