IGCSE Maths / Powers and roots
Solving problems in standard form revision notes
Edexcel International GCSE Maths (4MA1), chapter 3: Powers and roots, specification point 1.9a. Part of the full course.
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Standard form helps you calculate with very large and very small quantities. In worded problems, first decide which operation the situation describes, then use the correct rule for the powers and write the final answer in standard form.