Expanded Form - Hundreds

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Grade Level
Middle School
Subject
Mathematics
Length of Time
45 minutes to 1 hour
Description

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

Goals

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

Materials Needed

The worksheet I have included in this lesson
Pencils and erasers

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

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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