Download
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
x + 4 PowerPoint Presentation

x + 4

192 Vues Download Presentation
Télécharger la présentation

x + 4

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. x + 4 x + 4 = -5 Subtraction

  2. what you do to one side, you must do to the other!

  3. addition

  4. what you do to one side, you must do to the other!!

  5. http://studyjams.scholastic.com/studyjams/jams/math/algebra/add-sub-equations.htmhttp://studyjams.scholastic.com/studyjams/jams/math/algebra/add-sub-equations.htm

  6. Using Models 7 + n = 12 + n =

  7. Using Models n - 5 = 9 - = n

  8. Using Models + = n

  9. Using Models - n =

  10. Paper and Pencil Will you add or 
subtract to find the value of p? p - 4 = 14 18 Click here to check 
your answer.

  11. Paper and Pencil Will you add or 
subtract to find the value of c? 9 + c= 9 0 Click here to check 
your answer.

  12. Paper and Pencil Will you add or 
subtract to find the value of s? s - 3 = 15 18 Click here to check 
your answer.

  13. Paper and Pencil Will you add or 
subtract to find the value of v? 10 + v = 16 Click here to check 
your answer. 6

  14. What are the missing values? 15 + 9 = 24 96 + 14 = 110 56 - 35 = 21 82 - 6 = 76 37 - 24 = 13 24 - 12 = 12

  15. Solving addition equations x + 5 = 11 x = ? x + 5 = 11 x + 5 - 5 = 11- 5 x x = 6 6 + 5 = 11

  16. Model the equation x x Write an equation: Write an equation: = = Solve the equation: Solve the equation: 11 = x + 9 x + 3 = 7 11 - 9 = x + 9 - 9 x + 3 - 3 = 7 - 3 x = 2 x = 4 4 + 3 = 7 11 = 2 + 9

  17. Solving subtraction equations x - 9 = 47 x - 51 = 33 x - 51 + 51 = 33 + 51 ? ? x - 9 + 9 = 47 + 9 ? x = 84 x = 56 84 - 51 = 33 56 - 9 = 47

  18. 2 2 + v = 4 Pull Pull d + 8 = 13 5 Pull Pull s - 5 = 2 7 Pull Pull 11 + x = 15 4 Pull Pull

  19. 3 7 + p = 10 Pull Pull b - 7 = 11 18 Pull Pull l + 3 = 5 2 Pull Pull g - 5 = 6 11 Pull Pull

  20. b+5, subtract 5 is the inverse operation subtract 5 from both sides of the equation, the 2 sides remain equal says that the sum of any # & 0 is that #. So, b+0=-3 is b=-3 that you checked your answer Remember What You Learned 8) inverse = opposite

  21. b/c of the inverse operation used to get a variable alone y-4, inverse operation is to add 4 to get the variable alone when you add 4 to each side of the equation, the 2 sides remain equal add 4 to each side of the equation