DO NOW #4

1. DO NOW #4 Solve the following: 1.5 and 1.6 - Adding and Subtracting Real Numbers

2. Page 31 1.5 and 1.6 - Adding and Subtracting Real Numbers 2

3. Adding and Subtracting Real Numbers SECTION 1.5 and 1.6 1.5 and 1.6 - Adding and Subtracting Real Numbers

4. Definitions All the numbers on a number line are called real numbers. You can use a number line to model addition and subtraction of real numbers. Addition - To model addition of a positive number, move right. To model addition of a negative number move left. Subtraction - To model subtraction of a positive number, move left. To model subtraction of a negative number move right. Rules: • If the signs of all of the numbers are the same, Operate as normal • If the signs are different, operate and take the bigger number • If there are two negatives next to each other, change the operation to positive. 1.5 and 1.6 - Adding and Subtracting Real Numbers

5. Example 1 Add 3 + 7 +3 +3 +7 10 11 12 -3 -1 0 1 2 3 4 6 8 9 -2 7 5 1.5 and 1.6 - Adding and Subtracting Real Numbers

6. Example 2 Add –3 + 7 –3 –3 +7 10 11 12 -3 -1 0 1 2 3 4 6 8 9 -2 7 5 1.5 and 1.6 - Adding and Subtracting Real Numbers

7. Example 3 Add 3 – 7 +3 –7 1.5 and 1.6 - Adding and Subtracting Real Numbers

8. Example 4 Add –7 – 3 –3 –7 1.5 and 1.6 - Adding and Subtracting Real Numbers

9. YOUR TURN • 162 + 247 • 162 – 247 • –162 + 247 • –162 – 247 1.5 and 1.6 - Adding and Subtracting Real Numbers

10. Example 5 Add |–7| – 3 1.5 and 1.6 - Adding and Subtracting Real Numbers

11. Example 6 Add |7 + (–17)| – 10 1.5 and 1.6 - Adding and Subtracting Real Numbers

12. Example 7 Add (–4) + (–6) + (–8) + 9 1.5 and 1.6 - Adding and Subtracting Real Numbers

13. Example 8 Add (–5) + (–2) + 9 – 3 1.5 and 1.6 - Adding and Subtracting Real Numbers

14. Your Turn Add 4 – (–3) – 12 – (–7) – 20 1.5 and 1.6 - Adding and Subtracting Real Numbers

15. Assignment Pg. 38: 1-57 EOO, Pg. 45: 1-29 EOO, 43-67 EOO 1.5 and 1.6 - Adding and Subtracting Real Numbers