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Module: Using Numeracy, Data and ITLesson: Using numbers and integers©2020Arden University Ltd. All rights reserved.Arden University Limited reserves all rights of copyright and all other intellectual property rights in these learning materials. No part ofany learning materials may be reproduced, stored in a retrieval system or transmitted in any form or by any means, includingwithout limitation electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of ArdenUniversity Limited.
Using numbers and integersWelcome to Lesson 1: Using numbers and integersThis module will take you from the very basics of counting through number systems, fractionsand percentages, to statistics and probability. On the way, you will learn how to use aspreadsheet, create graphs and use data to support your decision-making and problemsolving. This module aims to provide a deep appreciation of the concepts, as well as thepractical skills in applying them.This lesson will explore number systems, types, properties and the order of arithmeticoperations in the decimal number system. The lesson will also exploreindices(also known aspowersorexponents),radicals(known asroots) and, more generally,surds(arithmeticoperations involving roots). Finally,approximation,scientific notation,negative numbersandspecial numbersare also covered in this lesson as these are encountered in practice.Developing a firm background in the basics will be very helpful when solving any type of mathsproblem.Knowledge TestsLet’s take a look at a few common situations that require the use of mental maths.Liz is 18 this year. You and Liz went to a restaurant for lunch to celebrate her birthday. The billfor lunch for the two of you came to £25.50. Liz paid the bill by credit card and you left a £2.50tip in cash. You agreed to split the total cost equally. How much do you owe Liz?Use mental maths or an rId8online calculatorto solve the problem:First, add £25.50 + £2.50, which = £28 for the total cost of the lunch. If you are splitting the bill,then you would divide £28 by 2, which = £11.50.Sandeep and Rita are doing some DIY on the spare bedroom to prepare for a new addition totheir family. At the hardware store, Sandeep notices an off-cut of carpet on sale at a discountof 50% of the normal price. It is advertised as a square piece measuring 20.25m2(areameasured in square metres). To the naked eye, it looks like the piece of carpet will just fit inthe bedroom, which measures 3.5m by 5m. Rita reminds Sandeep that the carpet going intothe bedroom must fit as a single piece cut to size. Should they buy the carpet? (Hint: this is a©2020 Arden University Ltd. All rights reserved
mental maths question - it does not need a calculator.)In 2019, Kyle Giersdorf, a 16-year old in the US, won a record $3million, the largest videogame prize ever. Inspired by his win, Richard and his schoolmate Toby decide to ditch theirgames consoles and focus on games installed natively on their computers at home. The

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Decimal, Numeral system, Arden University Ltd

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