# How to...

## The history of partitioning

Partitioning is a great way to solve multiplication and addition in this poster I will explain how to partition what it is used for and when to use it. Also it is very fast way to solve large maths problems.

First you need to find your problem I'll use 324 + 641 so to start split a the numbers as shown

300 20 4 600 40 1 Also if you cant split the numbers use a ones tens hundred grid.

Now add 300 + 600 = 900

Then 20 + 40 = 60

And 4 + 1 = 5

After that 960 + 5 = 965

## Partitioning an multiplication problem

Ok say we wanted to figure out how to solve 5 x 12

First split 12 into 10 , 2 the go

5 x 10 = 50

5 x 2 = 10

Then 50 + 10 = 60

Here's another example

7 x 8 =

first split 8 into 4 and 4

7 x 4 = 28

7 x 4 = 28

Then 28 + 28 =

## Lets use both

Here's another example

7 x 8 =

first split 8 into 4 and 4

7 x 4 = 28

7 x 4 = 28

Then 28 + 28 =

20 20 8 8

20 + 20 = 40

8 + 8 = 16

40 + 16 = 56

## The end

Thank you for reading I hope you learnt how to partition

By Demi Jonassen