Powerpoint  Subtraction Of Decimals  L2
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Powerpoint Subtraction Of Decimals L2

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Powerpoint  Subtraction Of Decimals  L2 Powerpoint Subtraction Of Decimals L2 Presentation Transcript

  • Adult numeracy Level 2 Subtraction of Decimals
  • Decimals at Level 2
    • At level 2 we should be able to add and subtract decimals up to three decimal places
    • A Decimal place is the position of the digit to the right of the decimal point, you should recognise these values as tenths, hundredths, and thousandths
  • Decimals at Level 2
    • For example; Let’s consider a piece of cloth that measures 42cm long, in metres this is 0.42m.
    • If we were then to cut off a length of 228mm from the cloth, to calculate the remaining length we need to perform the following calculation
    • 0.42-0.228=?
    • 0.420
    • 0.228
    We start by setting out the calculation in the usual way, keeping the decimals in line Notice that we have added a zero after the 0.42 to keep the place values correct
    • 0.420
    • 0.228
    We cannot subtract the eight from the two (Thousandths) so we borrow one of the hundredths from the next column Note; one hundredth is the same as ten thousandths
    • 0.420
    • 0.228
    We cannot subtract the two from the one(hundredths) so we borrow one of the tenths from the next column Note; one tenth is the same as ten hundreths
    • 0.420
    • 0.228
    It now just remains for us to subtract the two tenths from the remaining three tenths Answer; the remaining cloth is 0.192m long