Standard form (scientific notation) — KCSE Mathematics
KCSE Mathematics · 83 practice questions · 4 syllabus objectives
What You'll Learn
Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.
Write very large and very small numbers in standard form (A × 10ⁿ, where 1 ≤ A < 10 and n is an integer)
Perform addition, subtraction, multiplication and division on numbers expressed in standard form
Apply standard form to express measurements in science and engineering contexts (e.g. mass of electron, distance to stars)
Standard form (scientific notation)
Sample Questions
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A small electronic device has a mass of 4.5 × 10⁻³ kg. Express this mass in grams using standard form. (2 marks)
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Identify the product of (3 × 10²) and (5 × 10⁴). Express your answer in standard form. (3 marks)
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Express the following numbers in standard form: (a) 4500000 [2 marks] (b) 0.000032 [2 marks].
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Why Practise Standard form (scientific notation)?
KNEC Aligned
Questions match the KCSE syllabus objectives and exam format exactly.
Detailed Marking Schemes
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