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Working with Decimals

Working with Decimals. September 2011. Kindly contributed by Charlotte Gustar , British Army Education Centre, Germany Search for Charlotte on www.skillsworkshop.org

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Working with Decimals

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  1. Working with Decimals 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 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.

  2. Coming up... . Get the point?! Complete your knowledge checker now – before we start.

  3. 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!

  4. DECIMALS DECIMALS

  5. PLACE VALUE

  6. Multiply by 10 – move the digits one place to the left 5 4 3 7 1 8 0 5 Multiply by 100 – move the digits two places to the left 0 7 6 0 2 0 0 8 3

  7. Divide by 10 – move the digits one place to the right 0 5 4 0 3 7 1 8 5 0 Divide by 100 – move the digits two places to the right 0 0 7 2 0 0 8 9 5

  8. Pounds to Pence Conversion quiz Remember! 100p = £1 1p = £0.01

  9. Convert the following amounts from pounds to pence: £1.99 = 199p £0.70 = 70p £6.07 = 607p £89.65= 8965p £22.09 = 2209p £46.33 = 4633p £5 = 500p £2.50 = 250p £3.75 = 375p

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

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

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

  13. 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.

  14. To sum up... • Re-visit your ‘Subject knowledge checker’ from the start of the lesson.

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