1. SECTION 2.2
ADDING INTEGERS

2. STEPS Given the four options
1 a + b
2 -a + (-b)
3 -a + b
4 a + (-b)
If you have option 1 or 2 , drop the signs, add the numbers together, then add a sign back.
If you have option 3 or 4, drop the sign, subtract (larger - smaller), add the sign from the larger number.

3. Option 1 Option 1 a + b Example 4,675 + 9,432 Drop the signs
add the numbers together
add a sign back.
Example 4, ,432

4. Option 2 Option 2 -a + (-b) Example -123,459 + (-45,954)
Drop the signs
add the numbers together
add a sign back.
Example -123,459 + (-45,954)

5. Option 3 Option 3 -a + b Example -12,549 + 45,317 Drop the sign
subtract (larger - smaller)
add the sign from the larger number.
Example -12, ,317

6. Option 4 Option 4 a + (-b) Example 9,619 + (-13, 412) Drop the sign
subtract (larger - smaller)
add the sign from the larger number.
Example 9,619 + (-13, 412)

7. Examples
(-321)
(89)
(-177)

8. Example -6 + (-15) + (-7) 3 + 14 + (-18) -13 + 8 + (-10) + (-27)
(-14) + (-20)

9. Example
The all time record low temperature for Texas is -23˚ F, Florida’s all-time record low temperature is 21˚ F higher than Texas’ record low. What is Florida’s record low temperature?