Decimals and Percents - Part Two

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Grade Level

• Middle School

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Subject

• Mathematics

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Length of Time

• 1 Hour

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Description

• In this lesson, students will change percents into decimals.

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Goals

• Students will learn:
  
  * About decimals and percents.
  
  * How to change percents into decimals
  
  

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Materials Needed

• * The worksheet I have included in this lesson
  
  * Pencils and erasers
  

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Procedure

• First, you will copy the worksheet so that each student will have one.
  
  Then, you will explain to the students how to change percents into decimals.
  
  To change percents into decimals, you remove the percent sign and move the decimal point two places to the left.
  For example:
  227% = 2.27 75% = .75
  
  After that, you will pass out the worksheet so that students can work on them independently.
  
  
  Worksheet - Changing Percents into Decimals
  
  Directions: Change the follow percents into decimals.
  
  1. 45%
  
  2. 66%
  
  3. 2%
  
  4. 35%
  
  5. 98%
  
  6. 75%
  
  7. 40%
  
  8. 80%
  
  9. 99%
  
  10. 65%
  
  11. 2%
  
  12. 89%
  
  13. 03%
  
  14. 67%
  
  15. 233%
  
  16. 568%
  
  17. 52%
  
  18. 55%
  
  19. 685%
  
  20. 234%
  
  
  
  
  Answer Sheet
  
  
  1. 45% = .45
  
  2. 66% = .66
  
  3. 2% = .02
  
  4. 35% = .35
  
  5. 98% = .98
  
  6. 75% = .75
  
  7. 40% = .40
  
  8. 80% = .80
  
  9. 99% = .99
  
  10. 65% = .65
  
  11. 2% = .02
  
  12. 89% = .89
  
  13. 03% = .03
  
  14. 67% = .67
  
  15. 233% = 2.33
  
  16. 568% = 5.68
  
  17. 52% = .52
  
  18. 55% = .55
  
  19. 685% = 6.85
  
  20. 234% = 2.34
  
  
  

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Grading

• Each problem is worth five points.
  
  100 to 90 = A
  
  89 to 80 = B
  
  79 to 70 = C
  
  69 to 60 = D
  
  Below 60 = F
  
  

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