Download Opener

Before you pass in your opener turn to
Problem 1 on page 206 and fill in the
information.
How would you explain your reasoning?
Write a math sentence then solve the problem
using a number line:
1.) What number is 7 more than -9?
2.) What number is 10 more than -8?
3.) What number is 10 less than 6?
4.) What number is 5 less than -4?
Adding Integers Part 1
Who remembers absolute value? What is it?
2a. What distance is shown by the first term in each
example?
The distance shown by the first term in each example is
the same; 5 units.
b. Describe the graphical representation of the first
term. Where does it start and in which direction does
it move? Why?
The graphical representation for the first term begins at 0
and moves to the right. It moves to the right because the
first term is positive
c. What is the absolute value of the first term in each
example?
The absolute value of 5 is 5.
3. Compare the second steps in each example.
a. What distance is shown by the second term in
each example?
The distance shown by the second term in
each example is the same: 8 units
b. Why did the graphical representation for the
second terms both start at the endpoints of the first
terms but then continue in opposite directions?
Explain…
The arrows are drawn in opposite directions because the
numbers are opposites of each other.
Positive tells me to go right negative tells me to go left.
3c. What are the absolute values of the second
terms?
┃8┃= 8
┃-8┃ = 8
4. Use the number line to determine each sum. Show
your work.
a. -3 + 7
0
Work on #4b, c, d, #5 & 6 in your
groups…3 minutes.
Work on #7 – 13 in your groups until the end
of class.