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Home > CC2 > Chapter 3 > Lesson 3.1.2 > Problem 3-19


Show the numbers of and tiles represented by each expression below. Sketch each model and state the number that it represents. Homework Help ✎

  1. If you need help starting the problem, look at the Math Notes box in Lesson 2.2.4.

    Begin by sketching a model of the integers.

    3-19a Step 1 diagram

    Use the model you just sketched to help you determine what number the expression represents.

    This expression represents .

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

    This expression represents . Remember to draw a diagram to model this expression.

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