Pearson Edexcel International GCSE.. Mathematics B PAPER 2. Graded A+

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Answer all TWELVE questions. Write your answers in the spaces provided. You must write down all the stages in your working. 1 (a) Write 248000000 in standard form. (1) (b) Write 2.56×10–4 as a... n ordinary number. (1) (c) Calculate, giving your answer in standard form 2 5 10 1 3 10 1 5 10 60 59 48 . . . × − × × − (3) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (Total for Question 1 is 5 marks) https://britishstudentroom-b430a.web.app/*P68818A0332* Turn over 3 2 The ages, in years, of 7 friends are 9 8 7 6 10 a 7 The mean age of the 7 friends is 8 years. (a) Work out the value of a (2) (b) Find the median age of the 7 friends. (2) There are 34 passengers on a bus. The mean age of these passengers is 49 years. 11 of these passengers are pensioners. The mean age of these pensioners is 72 years. (c) Calculate the mean age, in years, of the passengers on the bus who are not pensioners. (3) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (Total for Question 2 is 7 marks) https://britishstudentroom-b430a.web.app/4 *P68818A0432* 3 Triangles A and D are drawn on the grid below. Triangle B is the image of triangle A under a reflection in the line with equation y = –x (a) On the grid below, draw and label triangle B. (2) Triangle A is transformed to triangle C under the translation − −   9 2 (b) On the grid, draw and label triangle C. (2) (c) Describe fully the single transformation that maps triangle A onto triangle D. [Show More]

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