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*Remember to write down any homework questions that
Opener: you had on the backboard BEFORE doing the opener!

1. A rectangle has length 12x ‐ 7 and width 5. Find an
expression for the area and an expression for the perimeter.

2. Evaluate the expression 5(2x ‐ 7) ‐ 3(3x ‐ 10) for each
of the following values.

a. 4 b. ‐5 c. d. 0

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�ϳܾ��վ��!!! When you have finished the quiz, pick up Weekly Review # 2
from me, and you can get started on it SILENTLY!

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��𳦳پ��ǲ��2.5        Rephrasing the Basic Rules

Partner Basic Rules Open your books to page 110.  Complete the In‐Class
Activity Experiment with your partners in your notes.  Each of you
must write down the letter from List 2 next to the number it
corresponds to in List 1.  You DO NOT need to write out each
statement in full.

When you are done, read through the Facts and Notation on
page 111 quietly.

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�ճ��ܱ��Ǵ�� Commutative Property of Addition:
Arithmetic

Associative Property of Addition:

Commutative Property of Multiplication:

Associative Property of Multiplication:

Distributive Property:

Additive Identity:

Multiplicative Identity:

Additive Inverse:

Multiplicative Inverse:

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�ʰ��پ��Բ��ٳ�� Ex 1:  Express each sentence without using variables:
Rules of Arithmetic
a. Dividing is the same as multiplying by the reciprocal.

b. Subtracting  is the same as adding the opposite.

c. If you have a product of two numbers, and you find the
    products of the opposites of the numbers, you get the same
    result.

d. If you multiply two numbers together and the result is 1, the
     numbers are reciprocals.

Ex 2: Find each product.  Look for patterns.

a.

b.

c.

d. Describe a pattern.

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Expressions Survivor!!! Complete each of the following problems in your notes.  Once
you agree on a final response write it down on your board,
and lay your board face down until I say BOARDS UP!  Be
careful in your work, as any incorrect answer will get you
eliminated from the game.

Use the Commutative & Associative Properties and the
Distributive Property to simplify each expression.  Please
write down which properties you used in simplifying each one.

a. 2(x + 4) + 7

b. 13 + 3(1 + 2x)

c. 3(2x ‐ 5) ‐ 8

d. 4(x + 3) + 7(x + 3)

e. 6(3 ‐ 2x) ‐ 3(x + 1)

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2.5 notes b

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2.5 notes b