1. Adding and Subtracting Integers
COURSE 2 LESSON 1-7
Adding and Subtracting Integers
Find each difference.
a. 5 – (–3)
5 – (–3) = 5 + (3) Add the opposite of –3, which is 3.
= 8 Simplify.
b. –7 – 2
–7 – 2 = –7 + (–2) Add the opposite of 2, which is –2.
= –9 Simplify.
1-7

2. Adding and Subtracting Integers
COURSE 2 LESSON 1-7
Recorded temperatures at Amundsen-Scott Station in Antarctica have ranged from a low of – 89°F to a high of – 13°F. Find the temperature range at Amundsen-Scott Station. .
1-7

3. Adding and Subtracting Integers
COURSE 2 LESSON 1-7
Recorded temperatures at Amundsen-Scott Station in Antarctica have ranged from a low of – 89°F to a high of – 13°F. Find the temperature range at Amundsen-Scott Station.
Subtract the low temperature from the high temperature.
–13 – (–89) = – Add the opposite of –89, which is 89.
= 76 Simplify.
1-7

4. Adding and Subtracting Integers
COURSE 2 LESSON 1-7
Recorded temperatures at Amundsen-Scott Station in Antarctica have ranged from a low of – 89°F to a high of – 13°F. Find the temperature range at Amundsen-Scott Station.
Subtract the low temperature from the high temperature.
–13 – (–89) = – Add the opposite of –89, which is 89.
= 76 Simplify.
The temperature range at Amundsen-Scott Station is 76°F.
1-7

5. Adding and Subtracting Integers
COURSE 2 LESSON 1-7
Find each sum or difference.
1. 7 – (–4) 2. –9 + 3
3. –8 + (–5) 4. –5 – 2 11 –6
–13 –7
1-7