KSS 2021 P1 (QP)

Name: ___________________________( ) Class: ______ KRANJI SECONDARY SCHOOL Preliminary Examination Secondary 4 Normal (Academic) MATHEMATICS 4045/01 PAPER 1 Wednesday 28 July 2021 2 hours KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI SECONDARY KRANJI READ THESE INSTRUCTIONS FIRST Write your class, index number and name in the spaces on top of this page. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all 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 with the answer. Omission of essential working will result in loss of marks. The total of the marks for this paper is 80. 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 your answers in degrees to one decimal place. For 𝜋, use either your calculator value or 3.142. Setter : Mrs Lee Siew Ling This question paper consists of 20 printed pages, including the cover page. [Turn over FR2 For Examiner’s Use Total 80

2 Mathematical Formulae Compound Interest Total amount = Mensuration Curved surface area of a cone = prl Surface area of a sphere = 4pr2 Volume of a cone = Volume of a sphere = Area of triangle ABC = Arc length = rq , where q is in radians Sector area = , where q is in radians Trigonometry Statistics Mean = Standard deviation = n rP ÷ ø öç è æ+1001 hr2 3 1p 3 3 4rp Cabsin 2 1 q2 2 1r C c B b A a sinsinsin == Abccba cos2222 -+= å å f fx 22 ÷÷ ø ö çç è æ - å å å å f fx f fx

3 1 By writing each number correct to 1 significant figure, estimate the value of . Answer .……………………………. [2] ______________________________________________________________________________________ 2 Find the smallest prime number x satisfying > 10. Answer x = …………………………. [2] _______________________________________________________________________________________ 3 T