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This lesson focuses on solving decimal equations using inverse operations. Students will learn to work backwards to undo each operation step by step. Includes warm-up exercises and practice problems.
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Day 24: TURN TO next page, begin the warm up • If 10 cubed is 1000, then 1000 is the _____ of ten. • Order these numbers from least to greatest: -2.85, 5/8, -.08, .58 • Simplify: 4x- • What is x? 9x-11=34 • What decimal is the same as Warm up
Homework 16. y=-2 17. x=4 18. x= 4 2/3 19. x=3 20. .45 21. a) 3/43; b) 8/43; c) 26/43 22. 19 feet 23. 24. 17 25. $123.35 26. 16 27. 28. 29. D 30. a) as likely as not b) certain c) impossible • 0 • Start at the origin. Go 2 units left and then 4 units up. Mark the point • B • Student B • 2850 meters • False 7. (3/5)*5=3 8. a) comedy; b) 45 people; c) 30 people 9. Double bar graph 10. I will grade 11. ¾ meters 12. D 13. a) 25x+10y; 50h+5z b) 25x+50h+10y+5z 14. 18 15. <
Glossary • Transformations: operations on geometric figures that alter its position or form. (Real world: used for computer graphics and animation) • Rotation: turn • Reflection: Flip (Think mirror image) • Translations: slide • Dilation: to make larger • Contraction: to make smaller
Warm up Objective I will be able to show transformations on an object using a coordinate plane Notes This Photo by Unknown Author is licensed under CC BY-SA
3 TABLE OF CONTENTS Date pg. # Lesson 9/7/18 Lesson 21: Solving One-Step Division/Multiplication 9/8/18 Lesson 22:Statisical Graphs 9/9/18 Lesson 23: Solving Two-Step Equations 9/13/18 Lesson 24: Solving Decimal Equations
Warm up Objective I will be able to solve decimal equations with inverse operations. If an equation has two operations, use inverse operations and work backwards to undo each operation one at a time. (Think PEMDAS backwards or SADMEP) First: add or subtraction Second: multiply or divide Method 1 Method 2 8+0.5x=10.5 8+0.5x=10.5 Notes
Notes Warm up Objective Ex. 1: .006a+.02=.2 Examples
Notes Warm up Objective Ex. 2: 0.2m+0.8=1.8 Examples
Notes Warm up Objective Ex. 3: -0.03n-1.2=-1.44 Examples
Notes Warm up Objective Ex. 4: Examples
Complete Lesson Practice a-e on pages 142 • Homework Exit Ticket