1) The document provides assignments for students including a test review handout due on Thursday and Test #4 on Thursday. 2) It also includes warm-up problems about money, percentages, perimeter, area and properties of integers. 3) Key terms are defined such as additive inverse, algebraic term, numerical coefficient, and like terms. Rules for adding integers with the same or different signs are also stated. 4) Examples are provided to simplify integer expressions and to collect like terms.

1. Lesson 31.notebook November 05, 2012
Assignment:
1­­>Set 31 (thirds) ­ Due Wednesday (11/7)
2­­>Test #4 Review Handout ­ Due Thursday (11/8)
3­­>Test #4 ­ Thursday (11/8)
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2. Lesson 31.notebook November 05, 2012
Lesson 31 Warm­Up:
1) 17 people have $200 each. How much
money do they have in all?
2) What is 75% of $200?
3) Find the perimeter: 10 in.
8 in.
4) Find the area:
5) Name the property illustrated: 62 x 0 = 0
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3. Lesson 31.notebook November 05, 2012
Lesson 31
*additive inverse – the opposite of a number
*algebraic term – an expression that includes a positive or
negative number and may include one or more variables
*numerical coefficient – the number part of a term
*like terms – terms that have identical variable parts,
including exponents
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4. Lesson 31.notebook November 05, 2012
FYI...
*To add integers:
when the signs are the same: ADD & use the same sign
when the signs are different: SUBTRACT & use the sign of
the larger number
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5. Lesson 31.notebook November 05, 2012
Examples ­ Lesson 31
Simplify.
A) (­12) + (­3)
B) (­12) + (3)
C) (12) + (­3)
D) (­3) + (+12)
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6. Lesson 31.notebook November 05, 2012
Collect like terms.
E) 3x + 2xy + xy ­ x
F) 6x2 ­ x + 2x ­ 1
G) 2a3 + 3b ­ a3 ­ 4b
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7. Lesson 31.notebook November 05, 2012
H) x + y ­ 1 ­ x + y + 1
I) P = L + W + L + W
J) P = s + s + s + s
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