This document contains notes from a math lesson on applying properties of operations to add and subtract rational numbers. It includes examples of homework problems from the lesson set and questions for students on how the properties of operations can help with rational number calculations and whether they could also help with multiplication and division.

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Module 2, Lesson 9 11/13/14
HW: Lesson 9 Problem set
Applying Properties of
Operations to help Add and
Subtract Rational #'s
Do Now:
Exit Ticket For Lesson 8

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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.

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HOMEWORK ANSWERS S.46

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HOMEWORK ANSWERS S.46

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S.50

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TEAM WORK S.50

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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.
S.50

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S.49

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S.49

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S.51

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S.52
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?

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