Example: biology

Edexcel GCSE Maths - Collins Education

Edexcel GCSEM aths209732 Edexcel Higher Teacher Pack title 13/27/15 2:38 PMHigher Student book AnswersBrowse the complete Collins catalogue at William Collins dream of knowledge for all began with the publication of his first book in 1819. A self-educated mill worker, he not only enriched millions of lives, but also founded a flourishing publishing house. Today, staying true to this spirit, Collins books are packed with inspiration, innovation and practical expertise. They place you at the centre of a world of possibility and give you exactly what you need to explore it.

Edexcel GCSE Maths 209732 Edexcel Higher Teacher Pack title page.indd 1 3/27/15 2:38 PM Higher Student Book Answers

Tags:

  Students, Book, Answers, Edexcel, Gcse, Math, Student book answers, Edexcel gcse maths

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Other abuse

Transcription of Edexcel GCSE Maths - Collins Education

1 Edexcel GCSEM aths209732 Edexcel Higher Teacher Pack title 13/27/15 2:38 PMHigher Student book AnswersBrowse the complete Collins catalogue at William Collins dream of knowledge for all began with the publication of his first book in 1819. A self-educated mill worker, he not only enriched millions of lives, but also founded a flourishing publishing house. Today, staying true to this spirit, Collins books are packed with inspiration, innovation and practical expertise. They place you at the centre of a world of possibility and give you exactly what you need to explore it.

2 Collins . Freedom to teach Published by Collins An imprint of HarperCollinsPublishers News Building 1 London Bridge Street London SE1 9GF HarperCollinsPublishers Limited 2015 10 9 8 7 6 5 4 3 2 1 ISBN 978-0-00-814703-7 A Catalogue record for this publication is available from the British Library Commissioned by Lucy Rowland and Katie Sergeant Project managed by Elektra Media and Hart McLeod Ltd Project edited by Jennifer Yong answers checked by Amanda Dickson Illustrations by Ann Paganuzzi Cover design by We Are Laura Cover photographs by

3 Procy/Shutterstock (top) and joingate/Shutterstock (bottom) Production by Rachel Weaver All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the Publisher or a licence permitting restricted copying in the United Kingdom issued by the Copyright Licensing Agency Ltd., 90 Tottenham Court Road, London W1T 4LP. Acknowledgements The publishers gratefully acknowledge the permissions granted to reproduce copyright material in this book .

4 Every effort has been made to contact the holders of copyright material, but if any have been inadvertently overlooked, the publisher will be pleased to make the necessary arrangements at the first opportunity. Edexcel gcse Maths (4th Edition) 1 HarperCollinsPublishers Ltd 2015 Higher Student book answers Chapter 1 Number: Basic number Exercise 1A 1 a 6000 b 5 cans cost , so 6 cans cost 32 = 5 6 + 2. Cost is 2 a 288 b 16 3 a 38 b Coach price for adults = 8, coach price for juniors = 4, money for coaches raised by tickets = 12 400, cost of coaches = 12 160, profit = 240 4 ( ) Kirsty can buy 18 models.

5 Per year, 70p per copy 6 450 7 15 8 3 weeks 9 10 Gavin pays 1840 = 11 a Col is correct b Abi has multiplied 30 50 as 150 instead of 1500. Baz has lined up the columns wrongly when adding. Instead of lining up the units he has lined up the first digits. Des has forgotten to add a zero on the second line of the multiplication, it should be 1530. Exercise 1B 1 a b c d e f g h i j k l 2 a b c d 3 a 35, , b 16, , c 60, , d 140, , 4 a 18 b 140 c d 12 e 5 a 280 b 12 c 240 d 450 e 6 a 572 b i ii iii 7 a Incorrect as should end in the digit 2 b Incorrect since 9 5 = 45, so answer must be less than 45 8 300 9 a 27 b i 27 ii iii 10 Mark bought a DVD, some jeans and a pen.

6 11 Headline A does not give the exact figure so does not convey any useful information. Headline B is accurate and records should be given accurately. Headline C may be correct but without the previous record does not convey any useful information. Exercise 1C 1 a 50 000 b 90 000 c 30 000 d 200 e f g h 10 i j 1000 2 a 56 000 b 80 000 c 31 000 d e f g h i j 3 a 60 000 b 5300 c d 110 e 9 f g h 4 a 65, 74 b 95, 149 c 950, 1499 5 Elsecar 750, 849; Hoyland 1150, 1249; Barnsley 164 500, 165 499 6 18 to 23 inclusive 7 1, because there could be 450 then 449 8 Donte has rounded to 2 significant figures or nearest 10 000 9 a Advantage quick.

7 Disadvantage assumes 3 penguins a square metre which may not be accurate b Advantage. Quite accurate as 5 by 5 is a big enough area to give a reliable estimate. Disadvantage takes a long time. Exercise 1D 1 a 60 000 b 120 000 c 10 000 d 15 e 140 f 100 g 200 h i j 45 2 a 5 b 25 c 3000 d 600 e 2000 f 5000 g 400 h 8000 i 4 000 000 3 30 90 000 = 2 700 000 600 8000 = 4 800 000 5000 4000 = 20 000 000 200 000 700 = 140 000 000 4 a 54 400 b 16 000 5 1400 million 6 His answer is correct but he had one too many zeros on each value, which cancel each other out.

8 Matt wrote 600,000 rather than 60,000 and 2000 rather than 200. The two mistakes cancelled themselves out due to the zeros involved. 7 a Value of the money is about 66 000 000 = 13 200 000, so it is enough to buy the yacht. b Weight is 66 000 000 5 = 330 000 000 grams = 330 tonnes, so they do not weigh as much as the yacht. 8 1420 000 000 000 64 000 000 22 000, so the National Debt per person is approximately 22 000. Edexcel gcse Maths (4th Edition) 2 HarperCollinsPublishers Ltd 2015 Higher Student book answers Exercise 1E 1 a 35 000 b 15 000 c 960 d 5 e 1200 f 500 2 a 39 700 b 17 000 c 933 d e 1130 f 550 3 a m b 6 minutes c 240 g d 83 C e 35 000 people f 15 miles g 14 m2 4 a 10 b 1 c 3 5 a b c 6 82 F, 5 km, 110 min, 43 000 people, seconds, 67th, 1788, 15 practice walks, 5 seconds The answers will depend on the approximations made.

9 Your answers should be to the same order as these. 7 a 15 000 b 18 000 c 17 500 8 $1000 9 a 40 miles per hour b 10 gallons c 70 10 a 80 000 b 2000 c 1000 d 30 000 e 5000 f 2500 g 75 h 100 11 a 86 900 b 1760 c 1030 d 29 100 e 3960 f 2440 g h 163 12 Approximately 500 13 1 million pounds is 20 million 5p coins. 20 000 000 = 84 000 000 grams = 84 tonnes, so 5 lorries needed. 14 C C = Celsius degrees 15 a i 428 57 ii b i 516 39 ii c i 18 16 ii 18 700 16 a 40 50 = 2000 20 100 = 2000 985 1000 = 2000 b as both values are rounded down the actual answer must be bigger than 2000.

10 The other two must be less than 2000. c Pete is correct it is not possible to tell. = 985 = 17 149 000 000 300 000 = 500 seconds 18 a 60 5 = 300 b Lower as both values are rounded up to get the estimate. 19 Macau s population density is approximately 710 000 times the population density of Greenland. 20 27 3 = 9 36 4 = 9. Second calculation must be biggest as first is smaller than 27 3 and second is bigger than 36 4. Exercise 1F 1 a 12 b 9 c 6 d 13 e 15 f 14 g 16 h 10 i 18 j 17 k 8 /16 l 21 2 4 packs of sausages and 5 packs of buns (or multiples of these) 3 30 seconds 4 12 minutes; Debbie will have run 4 laps; Fred will have run 3 laps.


Related search queries