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Math Help - Rounding off Decimals

  1. #1
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    Rounding off Decimals

    I know how to round off very decently but I have to ask this question.

    I need to round off 242.48407 to the nearest thousandths.

    I look at the number to the right of 4 and notice there is a zero there.

    Would the answer be 242.484 or 242.485?

    Thanks
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  2. #2
    o_O
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    242.484{\color{red}0}7

    Look at the digit after the thousandth one. If it is larger than or equal to 5, we round up. Otherwise, we round down.

    So: 242.484{\color{red}0}7 \approx 242.484
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