1. 11-5 Subtracting Integers Warm Up Problem of the Day
Course 1
Warm Up
Problem of the Day
Lesson Presentation

2. Subtracting Integers 11-5 Warm Up Find each sum. 1. –4 + 6 2. 5 + 12
Course 1
11-5
Subtracting Integers
Warm Up
Find each sum.
1. –
3. – –8 + 9
Give the opposite of each number. –8
7. – 2 17 1 –7 8 3 –1

3. Subtracting Integers 11-5 Problem of the Day
Course 1
11-5
Subtracting Integers
Problem of the Day
Jamal knows his average score for 3 science tests. If he adds the average and the amount that each score differs from the average, what will his sum be?
The average

4. Course 1
11-5
Subtracting Integers
Learn to subtract integers.

5. Subtracting Integers on a Number Line
Course 1
11-5
Subtracting Integers
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.

6. Additional Example 1: Writing Integer Subtraction
Course 1
11-5
Subtracting Integers
Additional Example 1: Writing Integer Subtraction
Write the subtraction modeled on each number line. A. B. –4 –3
–8 –7 – 6 –5 –4 –3 –2 –
The subtraction modeled is –3 – 4 = –7.
– (–9)
(–5)
–6 –5 –4 –3 –2 –
The addition modeled is –5 – (–9) = 4.

7. Subtracting Integers 11-5 Check It Out: Example 1
Course 1
11-5
Subtracting Integers
Check It Out: Example 1
Write the subtraction modeled on each number line. A. B. –5 –2
–8 –7 – 6 –5 –4 –3 –2 –
The subtraction modeled is –5 – 2 = –7.
–(–5)
(–3)
–6 –5 –4 –3 –2 –
The addition modeled is –3 – (–5) = 2.

8. Additional Example 2A: Subtracting Integers
Course 1
11-5
Subtracting Integers
Additional Example 2A: Subtracting Integers
Find the difference.
4 – 6
(–6) 4
–3 –2 –
4 – 6 = –2

9. Additional Example 2B: Subtracting Integers
Course 1
11-5
Subtracting Integers
Additional Example 2B: Subtracting Integers
Find the difference.
3 – (–3) 3
–(–3) –
3 – (–3) = 6

10. Subtracting Integers 11-5 Check It Out: Example 2A
Course 1
11-5
Subtracting Integers
Check It Out: Example 2A
Find the difference.
2 – (–5) 2
– (–5) –
2 – (–5) = 7

11. Subtracting Integers 11-5 Check It Out: Example 2B
Course 1
11-5
Subtracting Integers
Check It Out: Example 2B
Find the difference.
3 – 6
(–6) 3
–3 –2 –
3 – 6 = –3

12. Additional Example 3: Evaluating Integer Expressions
Course 1
11-5
Subtracting Integers
Additional Example 3: Evaluating Integer Expressions
Evaluate a – 4 for a = 2.
a – 4
Write the expression.
2 – 4
Substitute 2 for a. –2
Subtract.

13. Subtracting Integers 11-5 Check It Out: Example 3
Course 1
11-5
Subtracting Integers
Check It Out: Example 3
Evaluate b – 6 for b= 8.
b – 6
Write the expression.
8 – 6
Substitute 8 for b. 2
Subtract.

14. Insert Lesson Title Here
Course 1
11-5
Subtracting Integers
Insert Lesson Title Here
Lesson Quiz
Find each difference.
1. 8 – –9 – (–3)
Evaluate x – (–7) for each value of x.
3. x = – x = 5
5. The peak of Mt. Everest is approximately 26,544 ft above sea level. The shore of the Dead Sea is about 1,200 ft below sea level. How much higher is the peak of Mt. Everest than the shore of the Dead Sea? 3 –6 5 12
27,744 ft