Chunking

1
Chunking

• By Sarah Barron

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The Aim Of The Presentation

• The aim of this presentation is to teach others
  the division method of chunking in 4 simple
  steps. I hope you understand it!
• It is called chunking because you take easy
  chunks out of the starting number.

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1

• Say you have this sum
• 172 divided by 4.
• Write 172 at the top of your page.

172
/ 4 25
- 100

• Think of an easy multiple of 4 which is close to,
  but lower than 172 like 100 and write it
  underneath 172. (This is your first chunk.)

• Next to 100 write divided by 4 25. Then draw a
  line underneath.

(Click mouse to continue.)
4
2

• Next subtract 100 from 172. You should get 72.
  Write 72 underneath.

172
/ 4 25
- 100

• Think again of an easy multiple of 4 which is
  close to, but lower than 72, like 40, and write
  it underneath 72. (This is your second chunk.)

72
- 40
/ 4 10
32

• Nearly there!..

• As before write divided by 4 10. Then continue.

(Click mouse to continue.)
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3

• Now use your times tables to divide 32 by 4.

172

• You should get 8.So write divided by 4 8
  (This is your third chunk.)

- 100 / 4 25
72
- 40 / 4 10

• Since 4 X 8 is exactly 32, there wont be a
  remainder. (So there wont be any more chunks.)

32
- 32 / 4 8
0

• Last step...

(Click mouse to continue.)
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4

• Down the side you should have a 25, 10 and 8.

172
- 100 / 4 25
Chunk 1

• Add them together and you get your answer!

72
- 40 / 4 10
Chunk 2
32
- 32 / 4 8
Chunk 3

• The answer is 43!

0
43

• So 172 / 4 43

(Click mouse to continue.)
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Thank you

• Thank you for listening.
• I hope you enjoyed the presentation and you
  understood it!