Splash Screen

1
Splash Screen
2
KC 1
Interactive Lab Subtracting Positive and
Negative Integers
3
Example 1
Subtract Positive Integers
Find 2 15.
2 15 2 (15) To subtract 15, add 15.
13 Simplify.
Answer 13
4
Example 1
Find 13 21.
A. 34 B. 8 C. 8 D. 34

1. A
2. B
3. C
4. D

5
Example 2
Subtract Positive Integers
Find 13 8.
13 8 13 (8) To subtract 8, add
8. 21 Simplify.
Answer 21
6
Example 2
Find 9 11.
A. 20 B. 2 C. 2 D. 20

1. A
2. B
3. C
4. D

7
Example 3
Subtract Negative Integers
Find 12 (6).
12 (6) 12 6 To subtract 6, add
6. 18 Simplify.
Answer 18
8
Example 3
Find 9 (4).
A. 13 B. 5 C. 5 D. 13

1. A
2. B
3. C
4. D

9
Example 4
Subtract Negative Integers
Find 21 (8).
21 (8) 21 8 To subtract 8, add
8. 13 Simplify.
Answer 13
10
Example 4
Find 17 (6).
A. 23 B. 11 C. 11 D. 23

1. A
2. B
3. C
4. D

11
Example 5
Evaluate an Expression
ALGEBRA Evaluate g h if g 2 and h 7.
g h 2 (7) Replace g with 2 and h
with 7. 2 7 To subtract 7, add
7. 5 Simplify.
Answer 5
12
Example 5
ALGEBRA Evaluate m n if m 6 and n 4.
A. 10 B. 2 C. 2 D. 10

1. A
2. B
3. C
4. D

13
Example 6
Use Integers to Solve a Problem
GEOGRAPHY In Mongolia, the temperature can fall
to 45ºC in January. The temperature in July may
reach 40ºC. What is the difference between these
two temperatures?
To find the difference in temperatures, subtract
the lower temperature from the higher temperature.
40 (45) 40 45 To subtract 45, add
45. 85 Simplify.
Answer The difference between the temperatures
is 85ºC.
14
Example 6
TEMPERATURE On a particular day in Anchorage,
Alaska, the high temperature was 15ºF and the low
temperature was 11ºF. What is the difference
between these two temperatures for that day?
A. 26ºF B. 4ºF C. 4ºF D. 26ºF

1. A
2. B
3. C
4. D

15
End of the Lesson
End of the Lesson