1. Agenda Warm Up - 8/28/17 Grab a notes page!
EQ:
Homework:
6 weeks calendar
Number Sets Test 8/25
Grab a notes page!
Complete the set of problems given to you the best you can

2. Rational Number Operations NOTES Let’s start with adding and subtracting integers
What do you remember??

3. Adding Integers Original Problem: -9 + -5 = (-)
After Rule: = (-)
After Rule: = (+)
Answer: -14
Answer: (+) 14
Original Problem: = (-)
Original Problem: = (-)
After Rule: = (-)
After Rule: = (-)
Answer: -15
Answer: -9
Rule #1- The signs are the same so I just add and keep the sign.

4. Adding Integers Original Problem: 9 + -5 = (+)
After Rule: = (+)
After Rule: = (-)
Answer: (+) 4
Answer: -4
Original Problem: = (-)
Original Problem: = (+)
After Rule: = (-)
After Rule: 7 – 2 = (+)
Answer: -1
Answer: (+) 5
Rule #2- The signs are different so I just subtract and keep the sign of the larger number.

5. Subtracting Integers Original Problem: 9 – (-5) =
After Rule: = (+)
After Rule: = (-)
Answer: (+) 14
Answer: -14
Original Problem: -8 – (-7) =
Original Problem: =
After Rule: = (-)
After Rule: = (-)
Answer: -1
Answer: -5
Rule : No matter the signs, I am going to add the opposite.
Once I change the problem to addition, I follow the addition rules.

6. Skills Check See next page

7. Agenda Warm Up - 8/29/17 Get a whiteboard from bottom f bookshelf
EQ:
Homework:
6 weeks calendar
Number Sets Test 8/25
Get a whiteboard from bottom f bookshelf
Write the rules you learned about adding and subtracting integers.

8. Write an answer on your whiteboard and do not turn over until I ask
14 – 16 =
72 + – 9
– =
–84 – (– 16) =
53 – (–7) =
–45 + – 8 =

9. Adding and Subtracting Decimals

10. Rules
Do the rules change if we move to adding and subtracting decimals?
Adding Rules
Same sign- add and keep the sign
Different sign- subtract and keep the sign of the larger number
Subtraction rule
Add the opposite

11. Adding Decimals Original Problem: -4.2 + -9.63= (-)
After Rule: = (-)
After Rule: 9.45 – 3.00 = (-)
Answer: -6.45
Answer:
Original Problem: = (+)
Original Problem: = (-)
After Rule: 14.2 – 8.89 = (+)
After Rule: 9.4 – 2.1 = (-)
Answer: (+) 5.31
Answer: -7.3
Make sure the decimals line up!
If there is an empty spot I put a zero to make sure all number have the same place value
Rule #1- The signs are the same so I just add and keep the sign.
Rule #2- The signs are different so I just subtract and keep the sign of the larger number.

12. Subtracting Decimals Original Problem: -0.4 – 0.23=
After Rule: = (-)
After Rule: = (-)
Answer:
Answer: -0.63
Original Problem: – (-14.2) =
Original Problem: 2.1 – (-9.4) =
After Rule: = (+)
After Rule: = (+)
Answer: (+) 5.31
Answer: (+) 11.5
Make sure the decimals line up!
If there is an empty spot I put a zero to make sure all number have the same place value
Rule : No matter the signs, I am going to add the opposite.
Once I change the problem to addition, I follow the addition rules.

13. Skills Check See next page