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Home > MC1 > Chapter 2 > Lesson 2.3.1 > Problem 2-107


Show the numbers of + and − pieces represented by each expression below. Sketch each model and state the number that it represents.

  1. Sketch a model of the integers.

    From the model, determine what the expression represents.

    For more help, look at the Math Notes in Lesson 2.3.1.

  1. Use part (a) as a guide for this problem. Remember to look for and eliminate zeros.

    Draw a diagram to model this expression. This expression represents 0.

  1. Use part (a) as a guide for solving this problem.