1. Subtracting Integers
#41

2. Subtracting Integers on a Number Line
Move left on a number line to subtract a positive integer.
Move right on a number line to subtract a negative integer.
Subtracting Integers on a Number Line 2

3. Example 1: Writing Integer Subtraction
Write the subtraction modeled on each number line. A. B.
–8 –7 – 6 –5 –4 –3 –2 –
The subtraction modeled is –3 – 4 = –7.
–6 –5 –4 –3 –2 –
The subtraction modeled is –5 – (–9) = 4. 3

4. Write the subtraction modeled on each number line.
Example 2
Write the subtraction modeled on each number line. A. B.
–8 –7 – 6 –5 –4 –3 –2 –
The subtraction modeled is –5 – 2 = –7.
–6 –5 –4 –3 –2 –
The subtraction modeled is –3 – (–5) = 2. 4

5. Example 3: Subtracting Integers
Find the difference.
4 – 6
–3 –2 – 5

6. Example 4: Subtracting Integers
Find the difference.
3 – (–3) – 6

7. Example 5
Find the difference.
2 – (–5) – 7

8. Example 6
Find the difference.
3 – 6
–3 –2 – 8

9. Example 7: Evaluating Integer Expressions
Evaluate a – 4 for a = 2. 9

10. Example 8
Evaluate b – 6 for b= 8. 10