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Home > INT1 > Chapter A > Lesson A.1.6 > Problem A-62

A-62.

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

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

    Some legal moves are removing zero pairs from one side of the Expression Mat and removing equal tiles from the top and bottom of the Expression Mat.

    Added to comparison, colored cross outs, as follows: Green: 1 negative x tile from positive & negative left regions. Red: 1 positive & 1 negative unit tile from negative left region. Yellow: 1 positive unit from positive left region & 1 positive unit from negative left region.

    Use the eTool below to determine which mat is greater.
    Click the link at the right to view full eTool version: A-62a HW eTool

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

    These two Expression Mats are equal.

    Use the eTool below to determine which mat is greater.
    Click the link at the right to view full eTool version: A-62b HW eTool

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