Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
October 09, 2015
Bell Ringer: Pick up your new Chapter 2 Guided Notes and copy down these vocab words
Unit 2- Chapter 2 Section 1
Variable: a symbol that represents 1 or more numbers
Algebraic Expression:
Evaluate:
a "math phrase" with at least 1 variable
to find the value of
Jun 6­8:17 PM
Examples:
Writing algebraic expressions
Lets think of some words that describe the following math operations...
Add
Subtract
Multiply
Divide
Jun 10­10:28 AM
Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
October 09, 2015
Write a variable expression that represents each phrase. If necessary, choose a variable to represent the unknown number.
1) Five more than a number x
2) Twice as old as Lily
3) A dinner bill of d dollars divided among 5 friends
4) Twelve fewer apples on the tree than yesterday
Aug 30­1:10 PM
Application: Writing Word Problems
5) The Environmental Club is making posters. The materials for each poster cost $4. Write an algebraic expression for the cost of p posters.
6) Nine students will hang t posters each. Write an algebraic expression for the total number of posters the students will hang.
Aug 30­1:10 PM
Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
October 09, 2015
Writing Word Phrases
7) Write two different word phrases for x + 2.
a) b)
Aug 30­1:10 PM
Take out Guided Notes!
Evaluating Algebraic Expressions
8) Evaluate each expression. Use the values p = ­2, n = 3 and s = 5
.
. .
a) 2p + 7
b) p + (n s) c) (n p) s
d) 15 ­ p
s
e) 8n + 2s
f) 6s ­ 3p
Oct 7­12:34 PM
Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
October 09, 2015
Bell Ringer­ in guided notes
Jun 10­11:04 AM
Challenge
Write an algebraic expression for each word phrase.
1) Four less than six times a number d
2) Eight more than three times a number p
Evaluate each expression. Use the values m = -4, n = -6 and p = 7
3) -5m - n
4) -2mn + p
Jul 26­12:40 PM
5) p - m - n
Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
October 09, 2015
Closure Section 2.1
1) Evaluate when n = 12 and p = ­5
a) 2n ­ 9
b) 3(n + p)
c) n ­ p
4
2) Write an algebraic expession for each word phrase.
a) two fewer than m mice
b) 12 times b boxes
Sep 8­3:23 PM
Oct 16­12:11 PM
Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
Oct 16­12:04 PM
Homework
Practice 2.1
Jun 10­11:05 AM
October 09, 2015
Unit 2 Chapter 2 Section 1 Expressions Equations Inequalities.notebook
Sep 8­3:22 PM
Sep 17­2:48 PM
October 09, 2015