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  • Perplex
    IB Math AIHL
    /
    Approximations & Error
    /

    Problem Bank

    [Maximum mark: 6]

    The total market value of all the gold in the world is ​2.7×1013​ US dollars.

    1. Given that a kilogram of gold costs ​$110000, calculate the mass of all the gold in the world.

      [2]

      To earn a crown, get your answer ready before you reveal the options!

    Olympic swimming pools have dimensions ​50m​ by ​25m​ by ​2m. It is given that ​1cm3​ of gold weighs ​19g.

    1. Find the number of olympic swimming pools needed to store all the world's gold.

      [4]

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