1. Chapter 2-3 Subtracting Integers
Unit 1
Chapter 2-3 Subtracting Integers

2. Subtracting Integers Rule
When subtracting integers, remember three letters! K-A-O Keep Add Opposite Consider either the Same Sign Rule or the Different Sign Rule Ex: 8 – (-2) =8 + (+2) (“Keep” the 8, Change the subtract to an “Add” then make the – 2 opposite to a positive 2- now it’s the same sign rule) = 10

3. More Examples
Ex 2: 8 – (- 3) = 8 + (+3) Keep Add Opposite– same sign rule = 11 Ex 3: 9 – 10 = 9 + (-10) Keep Add Opposite-different sign rule = -1 Ex 4: - 6 – 2 = -6 + (-2) Keep Add Opposite – same sign rule = - 8

4. Let’s practice 8 – 15 7 – (-3) - 3 – (-5) 9 – (-3) -10 – (-5)
Let’s check our answers

5. Let’s check our answers!
8 – 15 = 8 + (-15) Keep Add Opposite – different sign rule
= -7
– (-3) = 7 + (+3) Keep Add Opposite – same sign rule
= 10
– (-5) = -3 + (+5) KAO– different sign rule
= 2
– (-3) = 9 + (+ 3) KAO – same sign rule
= 12
-10 – (-5) = (+5) KAO – different sign rule
= -5