1. Quick Review and Warm-Up You can copy for notes if needed.
Integers Review
Quick Review and Warm-Up
You can copy for notes if needed.

2. Integers If a number does not have a sign, it means it is positive.
5-4
The positive number here is 5
The negative number here is 4

3. Integers Subtracting a negative is the same thing as adding. 6-(-3)
The two negatives next to each other become positive
Therefore = 9

4. Integers
At any time if a positive and a negative are together, it is always SUBTRACTION.
6+(-3)
6 is positive, 3 is negative
Therefore 6 – 3 = 3

5. Integers
At any time if a positive and a negative are together, it is always SUBTRACTION.
5+(-7)
5 is positive, 7 is negative
Therefore 7 – 5 = 2 but wait….
How do we know if it’s negative or positive?
Look at the bigger number!
-7 is bigger
Answer is -2

6. Integers At any time if both signs are the same, add! -5 – 3
5 is negative, 3 is negative
The answer will be negative.
5 + 3 = 8, the answer is -8

7. Integers At any time if both signs are the same, add! -4 +(–7)
4 is negative, 7 is negative
The answer will be negative.
4 + 7 = 11, the answer is -11

8. ANY QUESTIONS?
Partner Practice – answer all on the whiteboard then compare your answer to the person next to you.

9. -1+4 -10-8 -4+(-3) 6-8 2+(-6) -9+(-13) -14+20 15-(-4) 9-14 -11-(-7)
Integers
-1+4
-10-8
-4+(-3)
6-8
2+(-6)
-9+(-13)
-14+20
15-(-4)
9-14
-11-(-7)