1. Interesting Integers! REVIEW

2. You have learned lots of things
About adding and subtracting
Integers. Let’s review!

3. Integer Addition Rules
Rule #1 – If the signs are the same, pretend the signs aren’t there. Add the numbers and then put the sign of the addends in front of your answer.
9 + 5 = 14
= -14

4. Integer Addition Rules
Rule #2 – If the signs are different pretend the signs aren’t there. Subtract the smaller from the larger one and put the sign of the one with the larger absolute value in front of your answer. =
Larger abs. value
Answer = - 4
9 - 5 = 4

5. One Way to Add Integers Is With a Number Line
When the number is positive, count
to the right.
When the number is negative, count
to the left. - + 1 2 3 4 5 6 -1 -2 -3 -4 -5 -6

6. Integer Subtraction Rule
Subtracting a negative number is the same as adding a positive. Change the signs and add.
2 – (-7)
is the same as
2 + (+7)
2 + 7 = 9!

7. Formative Order least to greatest -10 0 8 -14 22 -1.2 1.3 Solve
Solve = = = =

8. Homework Based on formative results-from textbook
Ordering and comparing – pg 56 #38, #39
Adding pg 60 #6 through #11 all
Subtracting pg 66 #29 through 34 all