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 that ask students to explain how to combine like rational numbers into a single term. The closing questions ask students about how properties of operations can help with adding and subtracting rational numbers, and whether these properties could also help with multiplying and dividing rational numbers.

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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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