Probably the most important skill for writing task 1 is being able to describe numbers correctly. IELTS candidates make a lot of basic mistakes in this area.
Take the simple table below for example. It shows the percentages of people who used two different forms of communication in the year 2012.
Can you write one correct sentence to describe the numbers in the table? Here is the big mistake that examiners see all the time:
In 2012, text message was 95%, while email was only 52%.
Can you see what the problem is here? Try translating the sentence into your language exactly as it is. Does it make sense?