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Math

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I am in 6th grade and have a math problem that I need help with. How can you use four rods that measure 2cm, 5cm, 7cm and 9cm to measure a length of 1cm?

  • Math -

    Here's one way:
    Use the 2cm rod twice:
    <----------5--------->
    <--2--><--2-->

  • Math -

    hh,jgtktm hg

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