Pre-Algebra Test Prep Chapter 8 Equations/Inequalities

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Pre-Algebra Test Prep Chapter 8Equations/Inequali
ties

• Planner Notes Study Practice Test
• Test on Monday!!!
• Bellwork Solve
• 2(9s 3) 6(3s 1)
• Warm-Up Song

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Bellwork 2(9s 3) 6(3s 1)

• 18s 6 18s 6 Distribute
• -6 -6 Subtract 6
• 18s 18s Divide by 18
• 18 18 Simplify
• s s
• Answer Works for all numbers!

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Today

• Bellwork/Planner Notes 5 minutes
• Correct Homework 5 minutes
• Review PowerPoints for
  Equations and Inequalities 10 minutes
• Racing Game 25 minutes
• Exit Question 2 minutes
• Clean Up

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Homework Corrections(Correct your own) ?

• Study Guide Switch to video

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Review PowerPoints

• Equations With Variables Both Sides
• Solve Inequalities

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Two TeamsWho Will Win The Battle?

• Player from each team goes to board.
• First player to work out correctly gets point.
• Winning team gets prize ?
• First 2 players to the board!

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Practice Test 14x 8 3x - 1

• 4x 8 3x 1 Subtract 3x
• -3x -3x Cross out zero pair
• x 8 -1 Simplify
• -8 -8 Cross out zero pair
• x -9 Simplify

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Practice Test 37a 4 3(a 9) 4a

• 7a 4 3(a 9) 4a Distribute
• 7a 4 3a 27 4a Combine Like Terms
• 7a 4 7a 27 Subtract 7a each side
• -7a -7a Cross Out Zero Pair
• -4 27 Simplify
• This is NEVER true, so the solution is the null
  set
• 0

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Practice Test 42(k-4) ½(4k 16)

• 2(k-4) ½(4k 16) Distribute
• 2k -8 2k -8 Since these equal.
• Then this is true for ALL NUMBERS

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Twice a number is 4 more than the number. Choose
the equation to find the unknown number, then
solve.
Your first response will count! Come to the
board.

• A. C.
• 2x 4 x x -4 2x x 4 x 4
• B. D.
• 2x x 4 x 4/3 2x x 4 x -2

C is correct response
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Write an inequality for (first response
counts)

• Cassidys allowance plus the 18 she earned
  baby-sitting was still less than 30.
• A. C.
• a 18 30 a 18 30
• B. D.
• a 18 30 a 18 30

The correct answer is C!
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Write the inequality.

• Six times a number is at most 91.
• Answer 6k 91
• at most means the number cannot be greater
  than, so it must be less than or equal to.
• Did you get tricked??? Take a note!

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Your first response will count!

• If k 9, which word best describes the sentence
• 4k 7 30
• A. Open C. false
• B. True D. subtraction

The correct answer is false! (C)
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Solve m 1 2/3 1

• m 1 2/3 1 Add 1 2/3 to each side
• 1 2/3 1 2/3 Cross out zero pair
• m 2 2/3 Simplify

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7p 5 -33

• 7p 5 -33 Undo subtraction
• 5 5 Cross out zero pair
• 7p -28 Undo multiplication
• 7 7 Simpify
• p -4
• Sign does not change since we did not divide by a
  negative! ?

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d 3 -7

• d 3 Multiply both sides by -7 -7
  
• -7 d 3 -7 Simplify
• 1 -7
• d -21 Sign changes since
• we multiplied by a
• negative!

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Danes scores on the first three of four 100
point tests were 86, 92 and 89. What score does
he need on his fourth test to ensure an average
of at least 90?

• Average is sum divided by of items.
• 869289x 90
• 4
• Work backwards with inverse operations.
• 90 x 4 360. 360 86 92 89 x
• 93
  x

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Homework Finish Practice Test!

• Answers on class webpage
• http//teacherweb.com/HI/WahiawaMiddle/Grace/apt1.
  aspx
• Test on Monday!!!!
• (RememberWASC will be here).

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Exit Question Write in your interactive
notebook.

• What are the differences and similarities between
  equations and inequalities?
• Use a Venn Diagram to help.

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Clean Up

• Thanks for playing
• Have a GREAT weekend (but study!).