Math - Sec 2 - SA 2 - 2021 - ACS Barker

) I CLASS . ~ ( ~ Ii' " \~ . . ~ght .. ~IJittdt c,it\11111 (~arktt~ab) END-OF-YEAR EXAMINATION SECONDARY TWO EXPRESS MATHEMATICS PAPER 1 1 HOUR 30 MINUTES Candidates answer on the Question Paper. READ THESE INSTRUCTIONS FIRST Write your index number and name 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, glue or correction fluid. 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 1r , use either your calculator value or 3.142, unless the question requires the answer in terms of 1r. 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 60. For Examiner's Use This question paper consists of 15 printed pages and 1 blank page. Partnerlnlearning 3 BP-3

Compound interest Mensuration Trigonometry Statistics End-of-Year Examination 202 1 Pap er I Mathematical Formulae Total amount = P (1 + -.!::_)" 100 Curved surface area of a cone = 1rrl Surface area of a sphere = 4n-r 2 1 Volume of a cone = - 1rr 2 h 3 4 Volume of a sphere = - ,rr 3 3 Area of triangle ABC = I_ ab sin C 2 Arc length = r0 , where 0 is in radians Sector area = l..r20 , where 0 is in radians 2 a b C --=--=--sin A sinB sin C a 2 =b2 +c2 -2bccosA "'V tx Mean =-LJ __ It Standard deviation = Itx 2 -[ItxJ 2 It It 2 Partnerlnlearning 4 Secondary 2 Express Mathe matics BP-4

1 Write these durations from the shortest to the longest. 308 minutes 5.1 hours 1 5- hours 6 Answer [1] 2 The table gives the lowest temperatures recorded in Beijing on each day of a week. Day Sun Mon Tue Wed Thu Fri Sat Temperature 2 3 0 -1 -3 -4 0 (in °C) (a) What was the difference between the lowest temperatures on Mon and Thu? Answer °C [1] ----------- (b) Between which two consecutive days was the change in temperature greatest? Answer and ------- ------- [1] 3 By writing each number correct to 1 significant figure, estimate the value of Show your working. End-of-Year Examination 2021 Paper 1 ✓490x0.763 4.49 Answer 3 Partnerlnlearning 5 [2] Secondary 2 Express Mathematics BP-5

i' BP-6 4 . Expand and simplify ( 3a - 2b) ( 3a + b) + 3ab . Answer 5 (a) Solve -4a + 2 ~ 17. Answer (b) Find the largest integer satisfying -4a + 2 ~ 17. End-of-Year Examination 2021 Paper 1 Answer 4 PartnerlnLearning 6 [2] [1] [1] Secondary 2 Express Mathematics

6 Find the reflex angle formed by the minute hand and the hour hand of a clock at 1.30 pm . Answer 7 Two rectangles are geometrically similar