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6 June, 21:43

The mass of the Rock of Gibraltar is 1.78 • 1012 kilograms. The mass of the Antarctic iceberg is 4.55 • 1013 kilograms. Approximately how many more kilograms is the mass of the Antarctic iceberg than the mass of the Rock of Gibraltar? Show your work and write your answer in scientific notation.

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  1. 6 June, 21:57
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    You have to round it down:

    4.55 * 1013

    4.55 * 1000

    and

    1.78*1012

    1.78*1000

    then take them away

    so:

    4.55*1000 = 4550

    1.78*1000 = 1780 -

    = 2770

    = 2.77*10^3

    Answer: The antarctic iceberg's mass is approximately 2.77*10³ times bigger than the mass of the rock of Gibraltar.
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