Module 2 lesson 9
- 1. Module 2 Lesson 9.notebook November 13, 2013 11/13/13 Module 2, Lesson 9 HW: Lesson 9 Problem set Applying Properties of Operations to help Add and Subtract Rational #'s Do Now: Exit Ticket For Lesson 8 1
- 2. Module 2 Lesson 9.notebook November 13, 2013 Exit Ticket Mariah and Shane both started to work on a math problem and were comparing their work in math class. Are both of their representations correct? Explain, and finish the math problem correctly to arrive at the correct answer. 2
- 7. Module 2 Lesson 9.notebook November 13, 2013 The opposite of a sum is the sum of its opposites. -(5 + 2) = -5 + -2 -(8 - 2) = -(-5 + 2 5 )= 2/ 7
- 8. Module 2 Lesson 9.notebook November 13, 2013 1. Sum of the opposites 2. Commutative 3.) Associative 4.) opposite add to zero Additive Inverse 5.) Additive Identity 8
- 9. Module 2 Lesson 9.notebook November 13, 2013 Discussion Question: Why did we use the properties of operations in the previous example? 9
- 11. Module 2 Lesson 9.notebook November 13, 2013 TEAM WORK -5.2 + 3.1 + 5.2 -5.2 + 5.2 + 3.1 0 + 3.1 3.1 11
- 12. Module 2 Lesson 9.notebook November 13, 2013 Explain step by step how to arrive at a single rational number to represent the following expression. Provide a written explanation as well as the related math work for each step. 12
- 13. Module 2 Lesson 9.notebook November 13, 2013 Closing: 1.) How are the properties of operations helpful when finding sums and differences of rational numbers? 2.) Do you think the properties of operations could be used in a similar way to aid in the multiplication and division of rational numbers? 13