Quantitative Methods - Unit 1 > Basic Calculations
 
 

Long Multiplication

This is when you are multiplying by a 'large' number.
(where you don't know the 'times table')

Worked example

Multiply 343 by 52

You probably don't know your 52 x table !!!

3

4

3

  

5

2

 x

The 5 is really a 50
The 2 is just a 2


1

7

1

5

0

343 x 50 i.e. put down a '0' and multiply by 5

6

8

6

 +

343 x 2


1

7

8

3

6

Add the 2 answers to give the final answer