IB DP Maths: AA SL复习笔记1.1.1 Standard Form
Standard form (sometimes called scientific notation or standard index form) gives us a way of writing very big and very small numbers using powers of 10.
Standard Form
Why use standard form?
- Some numbers are too big or too small to write easily or for your calculator to display at all
- Imagine the number 5050 , the answer would take 84 digits to write out
- Try typing 5050 into your calculator, you will see it displayed in standard form
- Writing very big or very small numbers in standard form allows us to:
- Write them more neatly
- Compare them more easily
- Carry out calculations more easily
- Exam questions could ask for your answer to be written in standard form
How is standard form written?
How are calculations carried out with standard form?
Exam Tip
- Your GDC will give very big or very small answers in standard form and will have a setting which will allow you to carry out calculations in scientific notation
- Make sure you are familiar with the form that your GDC gives answers in as it may be different to the form you are required to use in the exam
Worked Example
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