Chunking

By Sarah Barron

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.

#1• Say you have this sum: • 172 divided by 4. • Write 172 at the top of

your page. / 4 = 25

• 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.

172

- 100

(Click mouse to continue.)

/ 4 = 25

172

- 100

#2• Next subtract 100 from

172. You should get 72. Write 72 underneath.

72• 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’.)

- 40

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

/ 4 = 10

32

• Nearly there!..

(Click mouse to continue.)

- 100 / 4 = 25

172

#3• Now use your times tables

to divide 32 by 4.

72

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

• Since 4 X 8 is exactly 32, there won’t be a remainder. (So there won’t be any more chunks.)

- 40 / 4 = 10

32

• Last step...

- 32 / 4 = 8

0

(Click mouse to continue.)

- 100 / 4 = 2525

172

#4

72

- 40 / 4 = 1010

32

- 32 / 4 = 88

0

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

• Add them together and you get your answer!

• The answer is 43!4343

• So 172 / 4 = 43So 172 / 4 = 43

++

Chunk 1

Chunk 2

Chunk 3

(Click mouse to continue.)

Thank you

• Thank you for listening.

• I hope you enjoyed the presentation and you

understood it!