Chapter 1, Lesson 4


1-4.A identify opposite values
For which of the following is —19 the opposite value?
I.
|—19|
II. —(—19)
III. —|—19|

(a) I and II only
(b) I and III only
(c) II and III only
(d) I, II, and III


1-4.B add integers using number lines
What sum is represented by this number-line model?


1-4.C add integers using absolute values

Find each sum.
a.
—6 + (—4)
b. 3 + (—11) + 0