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Math Help - Decimals

  1. #1
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    Question Decimals

    I have 3 questions. Answer as many as you can please

    1) Minnie rounded a number to 8.65. What could the original have been?

    2) Find the average of 3.2, 3.9 and 2.8

    3) A motorist paid $37.08 for 40 litres of petrol. What was the price in cents per litre?

    Thanks heaps

    Kaylen
    Last edited by Kaylen12; February 5th 2009 at 09:05 PM. Reason: spellin error
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  2. #2
    Senior Member
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    Quote Originally Posted by Kaylen12 View Post
    I have 3 questions. Answer as many as you can please

    1) Minnie rounded a number to 8.65. What could the original have been?
    The original could have been bigger than 8.625 or smaller than 8.675

    Quote Originally Posted by Kaylen12 View Post
    2) Find the average of 3.2, 3.9 and 2.8
    (3.2+3.9+2.8)/3 = 3.3


    Quote Originally Posted by Kaylen12 View Post
    3) A motorist paid $37.08 for 40 litres of petrol. What was the price in cents per litre?
    ($37.08)/(40 litres) = $0.927/litre = 93cents/litre
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