introduction to pre algebra
Download
Skip this Video
Download Presentation
Introduction to Pre-Algebra

Loading in 2 Seconds...

play fullscreen
1 / 15

Introduction to Pre-Algebra - PowerPoint PPT Presentation


  • 248 Views
  • Uploaded on

Introduction to Pre-Algebra . 1 st 9 Weeks. Warm up – Day 1. 21 - 2(3) 4 + 3 ∙ 9 2(9) + 3 6(1.4) + 12 7 (2.9) - 5. Standard 3. Use order of operations to evaluate and simplify algebraic expressions. Applying the substitution principle

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Introduction to Pre-Algebra' - danton


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
warm up day 1
Warm up – Day 1
  • 21 - 2(3)
  • 4 + 3 ∙ 9
  • 2(9) + 3
  • 6(1.4) + 12
  • 7 (2.9) - 5
standard 3
Standard 3

Use order of operations to evaluate and simplify algebraic expressions.

  • Applying the substitution principle
  • Applying the properties of operations on rational numbers to evaluate and simplify algebraic expressions.
vocabulary
Vocabulary
  • Variable
  • Coefficient
  • Term (in an expression)
  • Constant
  • Inequality
  • Base (in numeration)
  • Exponent
  • Algebraic expression
i evaluate each expression for the given value of the variable
I. Evaluate each expression for the given value of the variable.
  • x – 5 for x = 12
  • 2y + 1 for y = 4
  • 6(n + 2) – 4 for n = 5, 6, and 7
ii evaluate each expression for the given values of the variables
II. Evaluate each expression for the given values of the variables.
  • 4x + 3y for x = 2 and y = 1
  • 9r – 2p for r = 3 and p = 5
  • If t = 7, solve the following problems.
    • t + 3
    • 18 – t
    • 21/t
    • 3t – 5
    • + 1
    • 2t - 4
write about it
Write about it
  • Compare these expressions 2x + 9 and 5(3+8). How are they different?
  • What does “7y” mean?
homework copy these in your notebook
Homework: Copy these in your notebook
  • In the following problems, t = 7. Solve the problems.

1. 9t ÷ 3 4.

2.

5. 4t + 5t

3. 5t + 6 6.

II. In the following problems a = 4, b = -2, c = 5 and d=10.

7.

8. abd

9. 5c – ad

10.

warm up day 2
Warm up – Day 2

Evaluate each expression for the given values of the variables.

  • 9y – 13 for y = 4
  • 6n + 2p for n = 2 and p = 3
  • 3x – y for x = 1 and y = 2
  • Find a pair of numbers that fits the description. Their product is 221 and their sum is 30.
check homework
Check Homework….
  • 9 (From p. 6)15. 4 gal
  • 7 16. 6 gal
  • 41 17. 2 gal
  • 7 18. 8 gal
  • 63
  • 14 (From p. 7) 56. Yes, when x=2
  • 18 both expressions have a
  • -80 value of 4.
  • 15
  • 111

Score: Out of 10 points

writing algebraic expressions
Writing algebraic expressions

Also: are/is – means “equal”

i write an algebraic expression for each word phrase
I. Write an algebraic expression for each word phrase.
  • The product of 8 and a number n
  • 9 less than a number w
  • 3 increased by the difference of p and 5
  • 24 decreased by the product of 6 and q
slide14
2 more than y
  • 2 divided into y
  • 2 less than y
  • twice y
  • the quotient of y and 2
  • y increased by 2
  • 2 less y
  • the product of 2 and y
ii write an expression for the word problem
II. Write an expression for the word problem.
  • Jared worked for h hours at the pay rate of $5 each hour. Write an expression to determine how much money Jared earned.
  • How much money will he earn if he works a total of 18 hours?
  • Ron bought two comic books on sale. Each comic book was discounted $1 off the regular price r. Write an expression to find what Ron paid before taxes. If each comic book was regularly $2.50, what was the total cost before taxes?
ad