Multiplication and division
It is useful for you to be able to multiply and divide without using a calculator. Learn how to do this using short division and short multiplication.
Multiplication - partition method
In this method the smaller number is partitioned (broken down into tens and units).
Example
Use the partition method to work out \({352}\times{27}\).
Method 1
\({27}\) is broken down into \({20}\) and \({7}\).
Method 2
\({27}\) is broken down into \({10}\), \({10}\) and \({7}\).
The method of partitioning into tens, simplifies the multiplication further because to multiply successively by \({10}\) is to simply move the digits one place to the left.