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IGCSE maths question watch

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    Not sure what the question requires me to do.

    -Write the recurring decimal 0.1555... as a fraction.

    I just put it into my calculator and got 7/45 so i got 1 mark.

    this is what the mark scheme says:

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    I don't understand the 15.55... part

    im assuming you take 0580 MATHS CIE like me here
    Mark scheme answers have several letters to them like B,M and all that other stuff

    here is the meaning of the letters:
    B-marks you can get even if you got the answer wrong
    M-part marks
    CAO-correct answer only
    OE- Or equivalent
    SC-special case
    Indeed/dep-independent mark/dependent mark

    The 15.55 part is 0.15... multiplied by 100 since it has over 2 decimal places. Incase you have difficulty with the recurring decimals to fractions topic i recommend you watch a video of you tube as i had difficulty with in the past.And make you sure you understand the topic since it pretty much ALWAYS comes on paper 2

    So if you say 0.1555 = x
    100x-10x= 15.555-1.555= 14 = 90x
    Simplify by dividing by 2
    14/90 = 7/45
    Hope this helps?
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Updated: May 2, 2016

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