3rd gr math

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tyrell says $750 is about $800. Sara says $750 is about $700. Who is correct? Explain? Its number sense.

  • 3rd gr math -

    See this previous answer.

    http://www.jiskha.com/display.cgi?id=1285625959

  • 3rd gr math -

    $750 rounds up to $800 because 5 rounds up to 10 and 15 rounds to 20 and 50 to 100
    so 750 breaks into 700 and 50
    50 rounds up to 100 + the 700=$800
    answered by year 7

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