1. Module 2 Lesson 8.notebook
Aim: Applying the Properties of
November 12, 2013
11/12/13
Operations to Add and Subtract
Rational Numbers
HW: Problem Set 8 #1 and 69 and
CRS 7 due tomorrow
Do Now: Lesson 7 exit ticket
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7. Module 2 Lesson 8.notebook
November 12, 2013
Properties of Operations
Commutative Property of Addition: A
change in the order does not change the
sum.
a+b=b+a
Associative Property of Addition: A change
in the grouping of numbers does not change
the sum.
(a + b) + c = a + (b + c)
Additive Identity: Adding zero does not
change a number
a+0=a
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12. Module 2 Lesson 8.notebook
November 12, 2013
Exercise 4:
Mr. Mitchell lost 10 pounds over the summer by jogging each
week. By winter time, he had gained
pounds. Represent this
situation with an expression involving signed numbers. What is
the overall change in Mr. Mitchell's weight?
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