1. 08/24/2017 Writing to Win Strategy: K-Free Writing
Ticket in the Door
08/24/2017
Writing to Win Strategy: K-Free Writing
Topic: Operations with Rational Numbers.
Write Whatever comes to your mind about the topic.
Keep writing your thoughts until your teacher calls times.
Agenda
Ticket in the Door
Review of Previous Lesson
Current Lesson
Guided Practice/Ticket out the door

2. Adding and Subtracting Rational Numbers 2-2
Objective: Students will add and subtract integers and rational numbers.

3. Addition of Rational Numbers
Same sign – add their absolute values. The sign for the answer will be the same as the addends.
Example: (-7) = - 18

4. Addition of Rational Numbers
Different signs – subtract the lesser absolute value from the greater absolute value. The sum has the value of the greater absolute value.
Example: 8 + (-9) = -1

5. Add
8 + (-5)
= 3
(-4)
= -5
= 8

6. Subtraction of Rational Numbers
Add its additive inverse: Take the sign of the largest number.
Example: 8 – 15 = 8 + (-15)
= -7

7. Subtraction -19 – 8 = -19 + (-8) = -27 2. 16 – (-23) = 16 + +23 = 39
3. – 9 – 6
= -9 + (-6) = -15

8. Guided Practice