THEROY WRITING

The fact that your English is not good does not matter provided that they can understand the point you are trying to make (you do not lose marks for grammar or spelling).

You should normally aim to make one point for each mark of the section. (So if there are 5 marks you should try and make 5 points, unless the question says different).

It is hard often to think of enough points, but always try and make 50% of the marks.

Write each point on a separate line and leave a blank line between each point.

Check with others how easy they find it to read your writing. If they find it difficult then so will be examiner – in that case try and print your words.

As far as the content is concerned, have you watched all the lectures (because it is in the free lectures that I explain not just the arithmetic but the understanding, which is what the examiner is testing in the written parts of questions).

Otherwise the best way of learning for the written parts is from the examiners own answers. I assume you have a Revision Kit from one of the approved publishers (if not then you must get one).
When you come to the written parts of questions, have a think before looking at the answer – decide what you think is being asked and make a few notes listing the points you would make. Then look at the answer. If you find you were answering something that was not being asked, then read the question again and find out why. Learn from the answers.

With regard to the first part of your question, you do not lose marks twice. So if you calculate a wrong figure you lose marks, but if your comments on your figure are sensible then you do not lose marks again – you can still get full marks for the comment.

With regard to the multiple choice questions, there is only one correct answer and if you get it wrong then you get no marks. The only way of learning this is practice – you must practice every MCQ in your revision kit and learn from your mistakes.