Working with Decimals Curriculum links September 2011. Kindly contributed by Charlotte Gustar, British Army Education Centre, Germany Search for Charlotte on www.skillsworkshop.org This PPT accompanies a lesson plan, a knowledge checker (both written by Charlotte), and two separate worksheets (beauty salon or garage, both written by Carrie Bray). All are available on skillsworkshop. Please also see the notes under many of the slides for additional teaching ideas. Parts of this PPT are adapted, with thanks, from: Slides 6-7, Multiplying and dividing by 10 and 100 (Elaine Baskerville) http://www.skillsworkshop.org/resources/multiplying-and-dividing-10-and-100 Slides 8-9, Pounds to pence (Jennifer Williamson) http://www.skillsworkshop.org/resources/pounds-pence October 2011. Kindly contributed to www.skillsworkshop.org by Charlotte Gustar, British Army Education Centre, Germany. Curriculum links This PPT covers several aspects of Functional Maths including: E3: Understand decimals to two decimal places in practical contexts L1: Add and subtract decimals up to two decimal places Please refer to the resource description page on skillsworkshop.org for detailed curriculum links and related resources.

Coming up... . Use knowledge checker to assess prior knowledge Get the point?! Complete your knowledge checker now – before we start.

Can you think of any more examples? Decimals You see them all around For instance in money!... Can you think of any more examples? In pairs: List as many examples of using decimals as possible and feed back to the group. You have 2 minutes!

DECIMALS DECIMALS Use this on an interactive whiteboard. Collect the answers to create a group mind map.

PLACE VALUE 1 4 3 7 5 9 Hundreds 100s Tens 10s Units 1s . Tenths 10ths Hundredths 100ths Thousandths 1000ths 1 4 3 7 5 9 Recap Place value with whole numbers and introduce the decimals. Explain what a decimal is and how it is used

Multiply by 10 – move the digits one place to the left . Hundreds Tens Units . _1_ 10 Tenths 100 Hundredths 1000 Thousandths 5 4 7 1 3 8 5 Multiply by 100 – move the digits two places to the left Hundreds Tens Units . _1_ 10 Tenths 100 Hundredths 1000 Thousandths These slides are taken from - Kindly contributed to www.skillsworkshop.org by Elaine Baskerville, Essentials Skills Tutor, Northern Ireland. Jan 2010 7 6 2 8 3

Divide by 10 – move the digits one place to the right . Hundreds Tens Units . _1_ 10 Tenths 100 Hundredths 1000 Thousandths 5 4 7 1 3 8 5 Divide by 100 – move the digits two places to the right Hundreds Tens Units . _1_ 10 Tenths 100 Hundredths 1000 Thousandths These slides are taken from -Kindly contributed to www.skillsworkshop.org by Elaine Baskerville, Essentials Skills Tutor, Northern Ireland. Jan 2010 7 2 8 9 5

Conversion quiz Remember! 100p = £1 1p = £0.01 Pounds to Pence Conversion quiz Remember! 100p = £1 1p = £0.01 Slides taken from- Kindly contributed to the Adult Basic Skills Resource Centre http://www.skillsworkshop.org by Jennifer Williamson, Skills for Life Tutor, Juniper Training Ltd. Wolverhampton Jennifer says: pounds to pence provides quick practice converting from £ to pence and vice versa. I use it as a warm up to money and calculator skills. Adult Numeracy links: MSS1/E3.1 Add and subtract sums of money using decimal notation (a) know how to align decimal points and figures in column addition and subtraction (b) know how to enter sums of money in a calculator N2/E3.3 Read, write and understand decimals up to two decimal places in practical contexts (such as: common measures to one decimal place, e.g. 1.5 m; money in decimal notation, e.g. £2.37)

Convert the following amounts from pounds to pence: £5 = 500p £2.50 = 250p £3.75 = 375p £1.99 = 199p £0.70 = 70p £6.07 = 607p £89.65= 8965p £22.09 = 2209p £46.33 = 4633p Slides taken from- Kindly contributed to the Adult Basic Skills Resource Centre http://www.skillsworkshop.org by Jennifer Williamson, Skills for Life Tutor, Juniper Training Ltd. Wolverhampton Jennifer says: pounds to pence provides quick practice converting from £ to pence and vice versa. I use it as a warm up to money and calculator skills. Adult Numeracy links: MSS1/E3.1 Add and subtract sums of money using decimal notation (a) know how to align decimal points and figures in column addition and subtraction (b) know how to enter sums of money in a calculator N2/E3.3 Read, write and understand decimals up to two decimal places in practical contexts (such as: common measures to one decimal place, e.g. 1.5 m; money in decimal notation, e.g. £2.37)

ADDITION LINE UP DECIMAL POINTS EXACTLY Then do the addition E.g. 2.34 + 18.034

SUBTRACTION LINE UP DECIMAL POINTS EXACTLY Then do the subtraction 234 – 3.56

When are you going to use these skills? Personal finances: Budgeting Bank account Job: Cash floats / tills Ordering parts / expenses

Activity Today you are on the reception desk, to get experience in this area of your new work place. You will have to deal with money and customers... Use the hand-out to complete the jobs. Good luck! You have 20 minutes. Use in connection with worksheet.

To sum up... Re-visit your ‘Subject knowledge checker’ from the start of the lesson. Lesson Objectives Difficult Not sure Think so OK To discuss the use of a decimals in daily life   To demonstrate + & - skills with decimals Identify how to multiply decimals by 10,100 using mental arithmetic To improve simple maths by using money Revisit knowledge checker Summary of session and review.   I enjoyed… I didn’t like... I need to improve....