1. Example 1: Modeling Integer Subtraction
Course 2
Subtracting Integers
Example 1: Modeling Integer Subtraction
Use a number line to find each difference.
–3 – 1 –1 –3
1 2
–6–5–4 –3 –2–1 0
Start at 0. Move 3 spaces left. To subtract 1,
move to the left.
–3 – 1 = –4

2. Subtracting Integers Example 2 Find each difference. 1. –2 – (–4)
Course 2
Subtracting Integers
Example 2
Find each difference.
1. –2 – (–4)
–(–4) –2
–4 –3 –2–1 0
Start at 0. Move left 2 spaces. To subtract –4,
move to the right.
–2 – (–4) = 2

3. Insert Lesson Title Here
Course 2
Subtracting Integers
Insert Lesson Title Here
Example 3
Use a number line to find each difference.
–2 – 4 –4 –2
1 2
–6–5–4 –3 –2–1 0
Start at 0. Move 2 spaces left. To subtract 4,
move to the left.
–2 – 4 = –6

4. Insert Lesson Title Here
Course 2
Subtracting Integers
Insert Lesson Title Here
Example 4
Use a number line to find each difference.
–4 – (–2)
–(–2) –4
–4 –3 –2–1 0
Start at 0. Move left 4 spaces. To subtract –2,
move to the right.
–4 – (–2) = –2

5. Subtracting Integers Addition and subtraction are inverse
Course 2
Subtracting Integers
Addition and subtraction are inverse
operations—they “undo” each other.
Instead of subtracting a number you
can add its opposite.

6. Insert Lesson Title Here
Course 2
Subtracting Integers
Insert Lesson Title Here
Example 4
Find the difference between 8°F and –5°F.
8 – (–5)
8 + 5 = 13
Add the opposite of 5.
The difference in temperature is 13˚F.

7. Subtracting Integers Practice Find each difference. A. 5 – (–2) 5 + 2
Course 2
Subtracting Integers
Practice
Find each difference.
A. 5 – (–2)
5 + 2
Add the opposite of –2. 7
B. –3 – 7
–3 + (–7)
Add the opposite of 7.
–10
C. – 1 – (–8)
–1 + 8
Add the opposite of –8. 7

8. Insert Lesson Title Here
Course 2
Subtracting Integers
Insert Lesson Title Here
Practice
Find each difference.
A. 4 – 2
4 + (–2)
Add the opposite of 2. 2
B. –2 – (–6)
–2 + 6
Add the opposite of –6. 4
C. –1 – 4
–1 + (–4)
Add the opposite of 4. –5