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Home : 2008 : Jan : 4

    cross mult.
    By roo

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    The cross mult. method


    3 5
    4 6 works every time. In this example 6x3=18 &
    4x5=20. The 18 (ends up on left side) is less than the 20 on the right, so 3/4<5/6. This method gives kids a fighting chance when comparing fractions.

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