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Home > INT1 > Chapter A > Lesson A.1.4 > Problem A-41

A-41.

Use legal moves to determine which side of each Expression Comparison Mat is greater.    

  1. 4 region Expression Comparison Mat: Positive Left: 2 positive, x tiles,1 positive unit tile, and 2 negative unit tiles. Negative Left: 1 positive, x tile, 1 positive unit tile. Positive Right: 1 positive, x tile, 3 negative unit tiles and 1 positive unit tile. Negative Right: 6 positive unit tiles.

    Use the expression mat below to determine which side is greater.
    Click the link at the right for full version of the eTool: A-41a HW eTool.

  2. Expression Comparison Mat: Which is greater. Positive Left: 2 positive, x tiles,1 positive unit tile, and 3 negative unit tiles. Negative Left: 1 positive, x tile, 1 negative x tile, and 4 positive unit tiles. Positive Right: 1 positive, x tile, 3 positive unit tiles and 1 negative unit tile. Negative Right: 1 negative, x tile, 4 positive unit tiles and 2 negative unit tiles.

    On the same mat, are the following colored tiles crossed off: Red: positive x from left positive & negative regions, & 1 positive unit & 1 negative unit from positive right region. Green: 1 positive & 1 negative unit from positive left region. 1 positive & 1 negative unit from negative right region. Blue: 1 positive & 1 negative unit from negative right region.

    Use legal moves to place all pieces on top.

    Remove the same pieces from each side.

    The Equation Mat on the right is greater.

    Use the expression mat below to determine which side is greater.
    Click the link at the right for full version of the eTool: A-41b HW eTool.

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