1. Lesson 31.notebook
October 14, 2013
Assignment:
1­­>Set 31 (odds) ­ Due Tomorrow (10/15)
2­­>Test signed??
3­­>Test #4 ­ Friday (10/18)

2. Lesson 31.notebook
October 14, 2013
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

3. Lesson 31.notebook
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
October 14, 2013

4. Lesson 31.notebook
October 14, 2013
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
larger number
the

5. Lesson 31.notebook
Examples ­ Lesson 31
Simplify.
A) (­12) + (­3)
B) (­12) + (3)
C) (12) + (­3)
D) (­3) + (+12)
October 14, 2013

6. Lesson 31.notebook
Collect like terms.
E) 3x + 2xy + xy ­ x
F) 6x2 ­ x + 2x ­ 1
G) 2a3 + 3b ­ a3 ­ 4b
October 14, 2013

7. Lesson 31.notebook
H) x + y ­ 1 ­ x + y + 1
I) P = L + W + L + W
J) P = s + s + s + s
October 14, 2013