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Check Hmwk on Front Board

Check Hmwk on Front Board. Page 93, #s 22-28 even Page 81, #s 28, 30. 2.5. Solving Equations and Using Addition and Subtraction. LESSON. Goal : You will be able to solve equations using addition and subtraction as an alternative to mental math. CB Standards We are Working Towards:

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Check Hmwk on Front Board

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  1. Check Hmwk on Front Board Page 93, #s 22-28 even Page 81, #s 28, 30

  2. 2.5 Solving Equations and Using Addition and Subtraction LESSON Goal: You will be able to solve equations using addition and subtraction as an alternative to mental math. CB Standards We are Working Towards: 2.1 understand and apply concepts related to #s, # systems, and # relationships; 2.2 Understand and apply concepts related to computation; 2.3 Understand and apply concepts related to measurement and estimation; 2.4 apply mathematical reasoning to make mathematical connections with other disciplines; 2.5 select and communicate appropriate problem solving strategies; 2.8 Use algebraic methods to describe patterns Assessment: Teacher Observation; Checkpoints F. Vollman Buckingham Elementary

  3. 2.5 LESSON While holding her cat, Ms. Keiser steps onto a scale. The scale reads 123. If Ms. KEISER weighs 119 pounds, how much does the cat weigh? • Table Talk: How might you solve this problem? 1. Write a verbal model. 2. Write an expression. 3. Evaluate. F. Vollman Buckingham Elementary

  4. Inverse Operations Addition and subtraction Undo each other

  5. Subtraction Property of Equality x + 10 = 13 x – 22 = 10 Addition Property of Equality

  6. Checkpoint(show use addition or subtraction property of equality) x – 2 = 11 (-22) = 10 + x

  7. Table Team The Regal Movie theater’s average attendance is 3,050 people in one weekend. This is 122 more people than the General Cinema's attendance. What is the attendance at the General Cinema? • Let x equal the unknown. • Write an equation. • Use the addition or subtraction property of equality to solve.

  8. 2.5 LESSON You weigh a horse by putting it into a trailer that weighs 2,150 pounds alone. The combined weight of the horse and trailer is 3,375 pounds. What is the weight of the horse? Weight of horse – weight of trailer = combined weight How could you solve this problem using the subtraction property of equality? F. Vollman Buckingham Elementary

  9. 2.5 LESSON While holding her cat, Ms. Keiser steps onto a scale. The scale reads 123. If Ms. KEISER weighs 119 pounds, how much does the cat weigh? • In your notebook: Describe how you would solve this problem using one of the two properties you learned about today? F. Vollman Buckingham Elementary

  10. 2.5 Solving Equations using Multiplication and Division Goal: You will be able to solve equations by using the inverse operations, multiplication and division, to discover unknown pieces of real world problems.

  11. During the 2002 regular season of the National Football League, running back Michael Bennett played in 16 games and averaged 81 rushing yards per game. Find his total rushing yards. Tampa Bay

  12. Solving an Equation Using Division - 6x = 48

  13. Solving Equations Using Multiplication 9 = w 7 Multiplication Property of Equality Division Property of Equality

  14. Checkpoint 2x = 18 -8 = b 8 x = 9 x = (-64)

  15. Page 99 Number 7 • Whole Class • Recorder • Needs to write neatly • Needs to stay to the side so everyone can see

  16. Page 99 • Numbers 4 and 6 • Whole class • Front board • Reporter needed (be loud) • Recorder needed (be neat)

  17. Table Team Work • Page 99 • #s 16-22 evens • Page 100 • #s 25-26 (check odd in back of book) When finished, revisit with Mrs. Vollman at back table OR extend your thinking by completing 2.5B #s 16-18 (on board)

  18. Answers • 0 18) (-38) 20) 182 22) (-324) 26) 30,000 seedlings 2.5B 16) a - 3 = 15; 18 years old 17) p – 0.08 =1.7 ; $2.50 18)160 = p + 23 ; 137 players

  19. During the 2002 regular season of the National Football League, running back Michael Bennett played in 16 games and averaged 81 rushing yards per game. Find his total rushing yards. • Write an equation. • Use the multiplication property of equality. • Explain how to solved this using your mathematical language. Ticket Out Tampa Bay Hmwk: page 101 #s 40-58; test next Thursday

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