### Home > MC1 > Chapter 2 > Lesson 2.3.1 > Problem2-107

2-107.

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

1.  $(-2)+(-6)$

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.

$-\quad - \ - \ -\\ - \quad - \ - \ - \\ -2 \quad \quad -6$

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

This expression represents $-8$.

1.  $(-2)+4+(-2)$

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

This expression represents $0$. Remember to draw a diagram to model this expression.

1.  $5+(-8)$

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