Expanded Form - Hundreds

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Grade Level

• Middle School

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Subject

• Mathematics

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Length of Time

• 45 Minutes To 1 Hour

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Description

• This lesson is about writing numbers to hundreds in expanded form.

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Goals

• Students will learn:
  
  * To write numbers in expanded form to hundreds
  

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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 a copy.
  
  Then, you will write draw a chart on the board to show the students what they will do on their worksheet.
  
  For the number 349, you can draw a chart to show:
  
  Hundreds Tens Ones
  
  Then, you will place the numbers in the right place value.
  
  Hundreds Tens Ones
  3 4 9
  
  The value of the 3 is 300. There are 3 hundreds, which equal 300.
  The value of the 4 is 40. There are 4 tens, which equal 40.
  The value of the 9 is 9. There are 9 ones, which equal 9.
  
  Expanded form of 349 = 300 + 40 + 9
  
  After that, you will pass out the worksheet so they can work on them independently.
  
  
  
  Worksheet - Writing Numbers in Expanded Form
  
  Directions: Write the following numbers in expanded form.
  
  1. 236 =
  
  2. 345 =
  
  3. 495 =
  
  4. 598 =
  
  5. 675 =
  
  6. 790 =
  
  7. 296 =
  
  8. 425 =
  
  9. 833 =
  
  10. 739 =
  
  11. 230 =
  
  12. 354 =
  
  13. 454 =
  
  14. 139 =
  
  15. 543 =
  
  16. 912 =
  
  17. 284 =
  
  18. 342 =
  
  19. 642 =
  
  20. 421 =
  
  
  
  
  
  Answer Sheet
  
  1. 236 = 200 + 30 + 6
  
  2. 345 = 30 + 4 + 5
  
  3. 495 = 40 + 9 + 5
  
  4. 598 = 500 + 90 + 8
  
  5. 675 = 600 + 70 + 5
  
  6. 790 = 700 + 90 + 0
  
  7. 296 = 20 + 9 + 6
  
  8. 425 = 400 + 20 + 5
  
  9. 833 = 800 + 30 + 3
  
  10. 739 = 700 + 30 + 9
  
  11. 230 = 200 + 30 + 0
  
  12. 354 = 300 + 50 + 4
  
  13. 454 = 400 + 50 + 4
  
  14. 139 = 100 + 30 + 9
  
  15. 543 = 500 + 40 + 3
  
  16. 912 = 900 + 10 + 2
  
  17. 284 = 200 + 80 + 4
  
  18. 342 = 300 + 40 + 2
  
  19. 642 = 600 + 40 + 2
  
  20. 421 = 400 + 20 + 1
  
  
  
  

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Grading

• Each one is worth five points for a total of 100 points.
  
  100 to 90 = A
  
  89 to 80 = B
  
  79 to 70 = C
  
  69 to 60 = D
  
  Below 60 = F
  
  

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