Chapter 3
  Algebra: Use Addition and Subtraction
Click the mouse or press the space bar to continue.
Algebra: Use Addition and Subtraction
3


    Lesson 3-1        Addition and Subtraction
                      Expressions...
3-1     Addition and Subtraction Expressions




      Five-Minute Check (over Chapter 2)
      Main Idea and Vocabulary
 ...
3-1      Addition and Subtraction Expressions




      • I will write and find the value of expressions.




      • expr...
3-1     Addition and Subtraction Expressions




      Standard 4AF1.1 Use letters, boxes, or other
      symbols to stand...
3-1   Addition and Subtraction Expressions




 Mr. and Mrs. Presley and some of their children eat
 apples in their lunch...
3-1       Addition and Subtraction Expressions




 2 +3            Replace n with 3.




      5        Add 2 and 3.
3-1    Addition and Subtraction Expressions




  What is the value of 4 + n if n = 7?



  A.   7

  B.   4

  C.   11

 ...
3-1      Addition and Subtraction Expressions




 Find the value of 15 + (h – 3) if h = 4.

      15 + (h – 3)           ...
3-1   Addition and Subtraction Expressions




  Find the value of (k + 2) – 1 if k = 6.



  A. 6

  B. 2

  C. 1

  D. 7
3-1    Addition and Subtraction Expressions




 Danielle ran 6 fewer miles than Martha last week.
 Write an expression fo...
3-1    Addition and Subtraction Expressions




  Sven earned $10 more than Erin last month. Write
  an expression for the...
3-2     Solve Equations Mentally




      Five-Minute Check (over Lesson 3-1)
      Main Idea and Vocabulary
      Califo...
3-2      Solve Equations Mentally




      • I will solve addition and subtraction equations
        mentally.



      •...
3-2     Solve Equations Mentally




      Standard 4AF1.1 Use letters, boxes, or other
      symbols to stand for any num...
3-2   Solve Equations Mentally




 Misae baby-sat for 2 hours on Friday, and by the
 end of the day on Saturday she had b...
3-2     Solve Equations Mentally




  One Way: Use Models

      Step 1 Model the equation.




               2+x=6
3-2     Solve Equations Mentally




  One Way: Use Models

      Step 2 Find the value of x.
3-2   Solve Equations Mentally




  Another Way: Mental Math

  2+x=6




  2+4=6

 Answer: So, x = 4.
3-2   Solve Equations Mentally




  Adelina worked for 3 hours on Tuesday, and by
  the end of Wednesday she had worked a...
3-2     Solve Equations Mentally




 Solve 19 – n = 12 mentally.


      19 – n = 12          19 minus what number equals...
3-2   Solve Equations Mentally




  Solve 16 – y = 11 mentally.



  A. 16

  B. 5

  C. 11

  D. 6
3-2    Solve Equations Mentally




 Big Red had 7 puppies last spring. This spring she
 had some more puppies and now has...
3-2     Solve Equations Mentally




      7 + p = 13           7 plus what number equals 13?

      7 + 6 = 13           ...
3-2    Solve Equations Mentally




  Write and solve an equation for the following
  situation: 9 plus a number is 13.

 ...
3-3     Problem-Solving Strategy: Missing and Extra Information




      Five-Minute Check (over Lesson 3-2)
      Main I...
3-3      Problem-Solving Strategy: Missing and Extra Information




      • I will identify extra and missing information...
3-3      Problem-Solving Strategy: Missing and Extra Information




      Standard 4MR1.1 Analyze problems by
      ident...
3-3     Problem-Solving Strategy: Missing and Extra Information




      Standard 4AF1.1 Use letters, boxes, or other
   ...
3-3   Problem-Solving Strategy: Missing and Extra Information




 Trina is making friendship bracelets to sell for
 $2 ea...
3-3   Problem-Solving Strategy: Missing and Extra Information




 Understand
 What facts do you know?
 • Trina sells frie...
3-3   Problem-Solving Strategy: Missing and Extra Information




 Plan
 Once you identify the information needed to solve...
3-3    Problem-Solving Strategy: Missing and Extra Information




 Solve
 Subtract 21 from 63. You do not need to know ho...
3-3   Problem-Solving Strategy: Missing and Extra Information




 Check
 Look back at the problem. You can check
 subtrac...
3-4     Algebra: Find a Rule




      Five-Minute Check (over Lesson 3-3)
      Main Idea
      California Standards
    ...
3-4      Algebra: Find a Rule




      • I will find a rule and use the rule to write an
        equation.
3-4     Algebra: Find a Rule




             Standard 4AF1.5 Understand that an
      equation such as y = 3x + 5 is a pr...
3-4   Algebra: Find a Rule




 Write an equation that describes the pattern in the
 table.




 Pattern: 1 + 4 = 5
      ...
3-4    Algebra: Find a Rule




  Write an equation that describes the pattern in the
  table.




  A.   x+1=y
  B.   x+9...
3-4    Algebra: Find a Rule




 Use the equation to find the next three numbers.



                                     ...
3-4    Algebra: Find a Rule




  Use the equation, x + 5 = y, to find the last 2
  numbers.




  A.   10, 13
  B.   15, ...
3-4   Algebra: Find a Rule




 The uniform store is offering a $5 discount for any
 purchase of $20 or more. Use a rule t...
3-4   Algebra: Find a Rule




 Identify the rule and write it as an equation.

 Rule: Subtract 5.

 Equation: x – $5 = y
3-4    Algebra: Find a Rule




 Find the next three numbers when the input (x) is
 22, 23, and 24.



                   ...
3-4   Algebra: Find a Rule




  A shoe store is offering a discount of $7 for any
  purchase of $15 or more. Use a rule t...
3-5     Problem-Solving Investigation: Choose a Strategy




      Five-Minute Check (over Lesson 3-4)
      Main Idea
   ...
3-5      Problem-Solving Investigation: Choose a Strategy




      • I will choose the best strategy to solve a problem.
3-5     Problem-Solving Investigation: Choose a Strategy




      Standard 4MR2.3 Use a variety of
      methods, such as...
3-5      Problem-Solving Investigation: Choose a Strategy




             Standard 4NS3.0 Students solve problems
      i...
3-5    Problem-Solving Investigation: Choose a Strategy




      KAMILAH: My soccer team is raising
      money by having...
3-5     Problem-Solving Investigation: Choose a Strategy




      Understand
      What facts do you know?
      • The so...
3-5     Problem-Solving Investigation: Choose a Strategy




      Plan
      You can make a table that shows how much the...
3-5     Problem-Solving Investigation: Choose a Strategy




      Solve
      The table shows how much money the team
   ...
3-5     Problem-Solving Investigation: Choose a Strategy




      Check
      Look back at the problem. Start with $180.
...
3-6     Balanced Equations




      Five-Minute Check (over Lesson 3-5)
      Main Idea and Vocabulary
      California S...
3-6      Balanced Equations




      • I will balance addition and subtraction equations.




      • balance
3-6     Balanced Equations




           Standard 4FS2.1 Know and understand that
      equals added to equals are equal.
3-6   Balanced Equations




 Show that the equality of 7 + 9 = 16 does not
 change when 3 is added to each side of the
 e...
3-6    Balanced Equations




  Show that they equality 1 + 2 = 3 does not change
  when 6 is added to each side of the eq...
3-6   Balanced Equations




 Show that the equality of 12 + 5 = 17 does not
 change when 6 is subtracted from each side o...
3-6    Balanced Equations




  Show that the equality of 10 + 9 = 19 does not
  change when 4 is subtracted from each sid...
3-6   Balanced Equations




 Find the missing number in 27 – 11 = 9 + 3 + ___ .


 27 – 11 = 9 + 3 +           Write the ...
3-6   Balanced Equations




  Find the missing number in 24 + 2 = 12 + 12 + ___.



  A. 12

  B. 2

  C. 24

  D. 10
Algebra: Use Addition and Subtraction
3


                   Five-Minute Checks




                   Addition and Subtra...
Algebra: Use Addition and Subtraction
3



    Lesson 3-1      (over Chapter 2)
    Lesson 3-2      (over Lesson 3-1)
    ...
Algebra: Use Addition and Subtraction
3
                                   (over Chapter 2)


    Find each difference.
  ...
Algebra: Use Addition and Subtraction
3
                                   (over Chapter 2)


    Find each difference.
  ...
Algebra: Use Addition and Subtraction
3
                                   (over Chapter 2)


    Find each difference.
  ...
Algebra: Use Addition and Subtraction
3
                                   (over Chapter 2)


    Find each difference.
  ...
Algebra: Use Addition and Subtraction
3
                                   (over Chapter 2)


    Find each difference.
  ...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-1)


    Find the value of each...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-1)


    Find the value of each...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-1)


    Find the value of each...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-1)


    Find the value of each...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-1)


    Find the value of each...
Algebra: Use Addition and Subtraction
3
                                   (over Lesson 3-2)


    Solve each equation men...
Algebra: Use Addition and Subtraction
3
                                   (over Lesson 3-2)


    Solve each equation men...
Algebra: Use Addition and Subtraction
3
                                   (over Lesson 3-2)


    Solve each equation men...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-2)


    Solve each equation me...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-3)


    Identify any missing o...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-3)


    Identify any missing o...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-3)


    Identify any missing o...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-4)


    Use a rule to write an...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-5)


    Identify any missing o...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-5)


    Identify any missing o...
Algebra: Use Addition and Subtraction
3
                                    (over Lesson 3-5)


    Identify any missing o...
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Math Gr4 Ch3
Math Gr4 Ch3
Math Gr4 Ch3
Math Gr4 Ch3
Math Gr4 Ch3
Math Gr4 Ch3
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Math Gr4 Ch3

  1. 1. Chapter 3 Algebra: Use Addition and Subtraction Click the mouse or press the space bar to continue.
  2. 2. Algebra: Use Addition and Subtraction 3 Lesson 3-1 Addition and Subtraction Expressions Lesson 3-2 Solve Equations Mentally Lesson 3-3 Problem-Solving Strategy: Missing and Extra Information Lesson 3-4 Algebra: Find a Rule Lesson 3-5 Problem-Solving Investigation: Choose a Strategy Lesson 3-6 Balanced Equations
  3. 3. 3-1 Addition and Subtraction Expressions Five-Minute Check (over Chapter 2) Main Idea and Vocabulary California Standards Example 1 Example 2 Example 3
  4. 4. 3-1 Addition and Subtraction Expressions • I will write and find the value of expressions. • expression • variable • parentheses
  5. 5. 3-1 Addition and Subtraction Expressions Standard 4AF1.1 Use letters, boxes, or other symbols to stand for any number in simple expressions or equations (e.g., demonstrate an understanding and the use of the concept of a variable).
  6. 6. 3-1 Addition and Subtraction Expressions Mr. and Mrs. Presley and some of their children eat apples in their lunches. Today, 3 of their children are eating apples. What is the value of 2 + n if n = 3? You need to find the value of 2 + n when n = 3. 2+n Write the expression.
  7. 7. 3-1 Addition and Subtraction Expressions 2 +3 Replace n with 3. 5 Add 2 and 3.
  8. 8. 3-1 Addition and Subtraction Expressions What is the value of 4 + n if n = 7? A. 7 B. 4 C. 11 D. 12
  9. 9. 3-1 Addition and Subtraction Expressions Find the value of 15 + (h – 3) if h = 4. 15 + (h – 3) Write the expression. 15 + (4 – 3) Repleace h with 4. 15 + 1 Find (4 – 3) first. 16 Next, find 15 + 1.
  10. 10. 3-1 Addition and Subtraction Expressions Find the value of (k + 2) – 1 if k = 6. A. 6 B. 2 C. 1 D. 7
  11. 11. 3-1 Addition and Subtraction Expressions Danielle ran 6 fewer miles than Martha last week. Write an expression for the number of miles Danielle ran. Words Ran 6 fewer miles than Martha Variable Define a variable. Let m represent the miles that Martha ran. Expression m–6 Answer: So Danielle ran m – 6 miles.
  12. 12. 3-1 Addition and Subtraction Expressions Sven earned $10 more than Erin last month. Write an expression for the amount of money Sven earned. A. a – 10 B. 10 – a C. a + 10 D. a + 2b
  13. 13. 3-2 Solve Equations Mentally Five-Minute Check (over Lesson 3-1) Main Idea and Vocabulary California Standards Example 1 Example 2 Example 3 Addition and Subtraction Equations
  14. 14. 3-2 Solve Equations Mentally • I will solve addition and subtraction equations mentally. • equation • variable • solve
  15. 15. 3-2 Solve Equations Mentally Standard 4AF1.1 Use letters, boxes, or other symbols to stand for any number in simple expressions or equations (e.g., demonstrate an understanding and the use of the concept of a variable).
  16. 16. 3-2 Solve Equations Mentally Misae baby-sat for 2 hours on Friday, and by the end of the day on Saturday she had baby-sat 6 hours total. How many hour did she baby-sit on Saturday? In the previous Explore activity, you solved equations using models. Equations can also be solved mentally.
  17. 17. 3-2 Solve Equations Mentally One Way: Use Models Step 1 Model the equation. 2+x=6
  18. 18. 3-2 Solve Equations Mentally One Way: Use Models Step 2 Find the value of x.
  19. 19. 3-2 Solve Equations Mentally Another Way: Mental Math 2+x=6 2+4=6 Answer: So, x = 4.
  20. 20. 3-2 Solve Equations Mentally Adelina worked for 3 hours on Tuesday, and by the end of Wednesday she had worked a total of 8 hours. How many hours did she work on Wednesday? A. 3 B. 8 C. 5 D. 11
  21. 21. 3-2 Solve Equations Mentally Solve 19 – n = 12 mentally. 19 – n = 12 19 minus what number equals 12? 19 – 7 = 12 You know that 19 – 7 = 12. n=7 Answer: So, the value of n is 7.
  22. 22. 3-2 Solve Equations Mentally Solve 16 – y = 11 mentally. A. 16 B. 5 C. 11 D. 6
  23. 23. 3-2 Solve Equations Mentally Big Red had 7 puppies last spring. This spring she had some more puppies and now has a total of 13 puppies. How many puppies did she have this spring? Write and solve an equation. Words 7 puppies plus some more equals 13. Variable Let p represent the additional puppies. Expression 7 + p = 13
  24. 24. 3-2 Solve Equations Mentally 7 + p = 13 7 plus what number equals 13? 7 + 6 = 13 You know that 7 + 6 = 13. p=6 Answer: So, Big Red had 6 more puppies this spring.
  25. 25. 3-2 Solve Equations Mentally Write and solve an equation for the following situation: 9 plus a number is 13. A. 9 + x = 13; 4 B. 9 + x = 13; 3 C. 9 – x = 13; 3 D. 9 – x – 13; 4
  26. 26. 3-3 Problem-Solving Strategy: Missing and Extra Information Five-Minute Check (over Lesson 3-2) Main Idea California Standards Example 1: Problem-Solving Strategy
  27. 27. 3-3 Problem-Solving Strategy: Missing and Extra Information • I will identify extra and missing information when solving problems.
  28. 28. 3-3 Problem-Solving Strategy: Missing and Extra Information Standard 4MR1.1 Analyze problems by identifying relationships, distinguishing relevant from irrelevant information, sequencing and prioritizing information, and observing patterns.
  29. 29. 3-3 Problem-Solving Strategy: Missing and Extra Information Standard 4AF1.1 Use letters, boxes, or other symbols to stand for any number in simple expressions or equations (e.g., demonstrate an understanding and the use of the concept of a variable).
  30. 30. 3-3 Problem-Solving Strategy: Missing and Extra Information Trina is making friendship bracelets to sell for $2 each. Last week, she sold 63 bracelets. Two weeks ago, she sold 21 bracelets. How many more bracelets did Trina sell last week than two weeks ago?
  31. 31. 3-3 Problem-Solving Strategy: Missing and Extra Information Understand What facts do you know? • Trina sells friendship bracelets for $2 each. • She sold 63 bracelets last week. • She sold 21 bracelets two weeks ago. What do you need to find? • Find how many more bracelets Trina sold last week than two weeks ago.
  32. 32. 3-3 Problem-Solving Strategy: Missing and Extra Information Plan Once you identify the information needed to solve the problem you can write a number sentence. Look for any extra information.
  33. 33. 3-3 Problem-Solving Strategy: Missing and Extra Information Solve Subtract 21 from 63. You do not need to know how much the bracelets cost. This is extra information. last week two weeks ago 63 – 21 = n 63 – 21 = 42 Answer: So, Trina sold 42 more bracelets last week than the week before.
  34. 34. 3-3 Problem-Solving Strategy: Missing and Extra Information Check Look back at the problem. You can check subtraction with addition. 21 + 42 = 63. So, you know the answer is correct.
  35. 35. 3-4 Algebra: Find a Rule Five-Minute Check (over Lesson 3-3) Main Idea California Standards Example 1
  36. 36. 3-4 Algebra: Find a Rule • I will find a rule and use the rule to write an equation.
  37. 37. 3-4 Algebra: Find a Rule Standard 4AF1.5 Understand that an equation such as y = 3x + 5 is a prescription for determining a second number when a first number is given.
  38. 38. 3-4 Algebra: Find a Rule Write an equation that describes the pattern in the table. Pattern: 1 + 4 = 5 3+4=7 Rule: Add 4. Equation: x + 4 = y
  39. 39. 3-4 Algebra: Find a Rule Write an equation that describes the pattern in the table. A. x+1=y B. x+9=y C. x + 10 = y D. x+8=y
  40. 40. 3-4 Algebra: Find a Rule Use the equation to find the next three numbers. 9 11 13 Find the next three numbers when the input (x) is 5, 7, and 9. x+4=y x+4=y x+4=y 5+4=9 7 + 4 = 11 9 + 4 = 13 Answer: So, the next three numbers in the pattern are 9, 11, and 13.
  41. 41. 3-4 Algebra: Find a Rule Use the equation, x + 5 = y, to find the last 2 numbers. A. 10, 13 B. 15, 18 C. 17, 22 D. 9, 12
  42. 42. 3-4 Algebra: Find a Rule The uniform store is offering a $5 discount for any purchase of $20 or more. Use a rule to write an equation to describe the pattern. Then use the equation to find the next three prices.
  43. 43. 3-4 Algebra: Find a Rule Identify the rule and write it as an equation. Rule: Subtract 5. Equation: x – $5 = y
  44. 44. 3-4 Algebra: Find a Rule Find the next three numbers when the input (x) is 22, 23, and 24. 17 18 19 x–5=y x–5=y x–5=y 22 – 5 = 17 23 – 5 = 18 24 – 5 = 19 Answer: So, the next three amounts are $17, $18, and $19.
  45. 45. 3-4 Algebra: Find a Rule A shoe store is offering a discount of $7 for any purchase of $15 or more. Use a rule to write an equation to describe the pattern. Then use the equation to find the next 2 prices. A. x + y = 7; 11, 12 B. x + 7 = y; 18, 19 C. x + y = 8; 8, 9 D. x + 7 = y; 11, 12
  46. 46. 3-5 Problem-Solving Investigation: Choose a Strategy Five-Minute Check (over Lesson 3-4) Main Idea California Standards Example 1: Problem-Solving Investigation
  47. 47. 3-5 Problem-Solving Investigation: Choose a Strategy • I will choose the best strategy to solve a problem.
  48. 48. 3-5 Problem-Solving Investigation: Choose a Strategy Standard 4MR2.3 Use a variety of methods, such as words, numbers, symbols, charts, graphs, tabl es, diagrams, and models, to explain mathematical reasoning.
  49. 49. 3-5 Problem-Solving Investigation: Choose a Strategy Standard 4NS3.0 Students solve problems involving addition, subtraction, multiplication, and division of whole numbers and understand the relationships among the operations.
  50. 50. 3-5 Problem-Solving Investigation: Choose a Strategy KAMILAH: My soccer team is raising money by having a car wash. We earn $36 each hour of washing cars. YOUR MISSION: Find how much money Kamilah’s soccer team will make in 5 hours.
  51. 51. 3-5 Problem-Solving Investigation: Choose a Strategy Understand What facts do you know? • The soccer team earns $36 each hour. What do you need to find? • You need to find how much money the team will make in 5 hours.
  52. 52. 3-5 Problem-Solving Investigation: Choose a Strategy Plan You can make a table that shows how much the team will earn in 1, 2, 3, 4, and 5 hours.
  53. 53. 3-5 Problem-Solving Investigation: Choose a Strategy Solve The table shows how much money the team earns in 1, 2, 3, 4, and 5 hours. Answer: So, Kamilah’s soccer team will make $180.
  54. 54. 3-5 Problem-Solving Investigation: Choose a Strategy Check Look back at the problem. Start with $180. Subtract $36 5 times. $180 – $36 = $144 $144 – $36 = $108 $108 – $36 = $72 $72 – $36 = $36 $36 – $36 = $0 So, you know that the answer is correct.
  55. 55. 3-6 Balanced Equations Five-Minute Check (over Lesson 3-5) Main Idea and Vocabulary California Standards Example 1 Example 2 Example 3
  56. 56. 3-6 Balanced Equations • I will balance addition and subtraction equations. • balance
  57. 57. 3-6 Balanced Equations Standard 4FS2.1 Know and understand that equals added to equals are equal.
  58. 58. 3-6 Balanced Equations Show that the equality of 7 + 9 = 16 does not change when 3 is added to each side of the equation. 7 + 9 = 16 Write the equation. 7 + 9 + 3 = 16 + 3 Add 3 to each side. 19 = 19 19 = 19 So, when you add 3 to each side, the equality does not change.
  59. 59. 3-6 Balanced Equations Show that they equality 1 + 2 = 3 does not change when 6 is added to each side of the equation. A. 1 + 2 + 6 = 3 + 6; 9 = 9 B. 1+2+3=3+6=6=9 C. 1 + 2 = 3 + 6; 3 = 9 D. 1 + 2 + 6 = 3 + 6; 6 = 6
  60. 60. 3-6 Balanced Equations Show that the equality of 12 + 5 = 17 does not change when 6 is subtracted from each side of the equation. 12 + 5 = 17 Write the equation. 12 + 5 – 6 = 17 – 6 Subtract 6 from each side. 11 = 11 11 = 11 So, when you subtract 6 from each side, the equality does not change.
  61. 61. 3-6 Balanced Equations Show that the equality of 10 + 9 = 19 does not change when 4 is subtracted from each side of the equation. A. 10 + 9 = 19 – 4; 19 = 15 B. 10 + 9 = 19; 15 = 15 C. 10 + 9 – 4 = 19 – 4; 15 = 15 D. 10 + 9 – 4 = 19 – 4; 15 = 19
  62. 62. 3-6 Balanced Equations Find the missing number in 27 – 11 = 9 + 3 + ___ . 27 – 11 = 9 + 3 + Write the equation. 27 – 11 = 9 + 3 + You know that 27– 11 = 16. To keep the equation balanced, a number must be added to 9 + 3 that will give the result of 16. 9 + 3 + 4 = 16. Answer: So, the missing number is 4.
  63. 63. 3-6 Balanced Equations Find the missing number in 24 + 2 = 12 + 12 + ___. A. 12 B. 2 C. 24 D. 10
  64. 64. Algebra: Use Addition and Subtraction 3 Five-Minute Checks Addition and Subtraction Equations
  65. 65. Algebra: Use Addition and Subtraction 3 Lesson 3-1 (over Chapter 2) Lesson 3-2 (over Lesson 3-1) Lesson 3-3 (over Lesson 3-2) Lesson 3-4 (over Lesson 3-3) Lesson 3-5 (over Lesson 3-4) Lesson 3-6 (over Lesson 3-5)
  66. 66. Algebra: Use Addition and Subtraction 3 (over Chapter 2) Find each difference. 200 – 189 A. 10 B. 121 C. 11 D. 21
  67. 67. Algebra: Use Addition and Subtraction 3 (over Chapter 2) Find each difference. $3.00 – $1.67 A. $2.43 B. $1.33 C. $4.67 D. $1.43
  68. 68. Algebra: Use Addition and Subtraction 3 (over Chapter 2) Find each difference. 5,500 – 1,254 A. 4,356 B. 6,754 C. 3,256 D. 4,246
  69. 69. Algebra: Use Addition and Subtraction 3 (over Chapter 2) Find each difference. 6,000 – 5,454 A. 546 B. 1,546 C. 456 D. 1,656
  70. 70. Algebra: Use Addition and Subtraction 3 (over Chapter 2) Find each difference. $70.00 – $22.17 A. $57.83 B. $58.93 C. $47.83 D. $37.83
  71. 71. Algebra: Use Addition and Subtraction 3 (over Lesson 3-1) Find the value of each expression if x = 3 and a = 4. (9 – a) + 7 A. 13 B. 12 C. 6 D. 11
  72. 72. Algebra: Use Addition and Subtraction 3 (over Lesson 3-1) Find the value of each expression if x = 3 and a = 4. x + (3 – 2) A. 4 B. 5 C. 9 D. 8
  73. 73. Algebra: Use Addition and Subtraction 3 (over Lesson 3-1) Find the value of each expression if x = 3 and a = 4. 8 + (15 – x) A. 19 B. 18 C. 11 D. 20
  74. 74. Algebra: Use Addition and Subtraction 3 (over Lesson 3-1) Find the value of each expression if x = 3 and a = 4. 4 + (a + 5) A. 12 B. 13 C. 5 D. 4
  75. 75. Algebra: Use Addition and Subtraction 3 (over Lesson 3-1) Find the value of each expression if x = 3 and a = 4. (a + 4) – 3 A. 4 B. 11 C. 5 D. 6
  76. 76. Algebra: Use Addition and Subtraction 3 (over Lesson 3-2) Solve each equation mentally. 6 + n = 13 A. n = 8 B. n = 6 C. n = 7 D. n = 5
  77. 77. Algebra: Use Addition and Subtraction 3 (over Lesson 3-2) Solve each equation mentally. k–2=7 A. k = 9 B. k = 8 C. k = 10 D. k = 5
  78. 78. Algebra: Use Addition and Subtraction 3 (over Lesson 3-2) Solve each equation mentally. 8–g=3 A. g = 3 B. g = 5 C. g = 6 D. g = 4
  79. 79. Algebra: Use Addition and Subtraction 3 (over Lesson 3-2) Solve each equation mentally. x + 4 = 15 A. x = 10 B. x = 9 C. x = 12 D. x = 11
  80. 80. Algebra: Use Addition and Subtraction 3 (over Lesson 3-3) Identify any missing or extra information. Then solve if possible. An express train leaves Grand Terminal at 5:05 P.M. The train arrives at the first stop at 5:21 P.M., the second stop at 5:46 P.M., and the last stop at 6:04 P.M. How long is the train ride? A. missing information: what time the train arrives at the last stop; can not solve the problem B. extra information: the times of the first and second stops; 59 minutes
  81. 81. Algebra: Use Addition and Subtraction 3 (over Lesson 3-3) Identify any missing or extra information. Then solve if possible. An express train leaves Grand Terminal at 5:05 P.M. The train arrives at the first stop at 5:21 P.M., the second stop at 5:46 P.M., and the last stop at 6:04 P.M. How long is the train ride? C. extra information: the time of the first stop: 41 minutes D. extra information: the times of the first and second stop; 1 hour
  82. 82. Algebra: Use Addition and Subtraction 3 (over Lesson 3-3) Identify any missing or extra information. Then solve if possible. An express train leaves Grand Terminal at 5:05 P.M. The train arrives at the first stop at 5:21 P.M., the second stop at 5:46 P.M., and the last stop at 6:04 P.M. How long is the train ride? B. extra information: the times of the first and second stops; 59 minutes
  83. 83. Algebra: Use Addition and Subtraction 3 (over Lesson 3-4) Use a rule to write an equation to describe the pattern. Then use the equation to find the next three numbers in the pattern. A. x + 3 = y; 11, 14, 17 B. 3x = y; 24, 33, 42 C. x + 4 = y; 12, 15, 18 D. 5 + x = y; 13, 16, 19
  84. 84. Algebra: Use Addition and Subtraction 3 (over Lesson 3-5) Identify any missing or extra information. Use the Four-Step Plan in this problem; solve if possible. Viviana is taking a late train from home to visit her cousins. The train leaves Savannah at 11 A.M. and arrives in Charleston at 1:30 P.M. on July 13. How long is Viviana’s trip? A. 2 hours and 30 minutes; extra information: July 13, visiting her cousins, late train B. 10 hours and 10 minutes; no extra information
  85. 85. Algebra: Use Addition and Subtraction 3 (over Lesson 3-5) Identify any missing or extra information. Use the Four-Step Plan in this problem; solve if possible. Viviana is taking a late train from home to visit her cousins. The train leaves Savannah at 11 A.M. and arrives in Charleston at 1:30 P.M. on July 13. How long is Viviana’s trip? C. 1 hour and 30 minutes; extra information: July 13, visiting her cousins, late train D. 2 hours and 30 minutes; missing information: why she is visiting her cousins
  86. 86. Algebra: Use Addition and Subtraction 3 (over Lesson 3-5) Identify any missing or extra information. Use the Four-Step Plan in this problem; solve if possible. Viviana is taking a late train from home to visit her cousins. The train leaves Savannah at 11 A.M. and arrives in Charleston at 1:30 P.M. on July 13. How long is Viviana’s trip? A. 2 hours and 30 minutes; extra information: July 13, visiting her cousins, late train
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