Decimals (operations, approximation, significant figures) — KCSE Mathematics
KCSE Mathematics · 103 practice questions · 4 syllabus objectives
What You'll Learn
Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.
Perform the four operations on decimal numbers and convert between fractions and decimals
Round off numbers to specified decimal places and significant figures, and estimate answers to calculations
Apply decimal operations to solve problems in measurement, science and everyday life contexts
Decimals (operations, approximation, significant figures)
Sample Questions
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A farmer uses 12.75 litres of pesticide for his crops. If he has a remaining stock of 50.5 litres, calculate the total amount of pesticide he originally had, rounding your answer to two decimal places. (2 marks)
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State the value of 5.678 rounded to: (a) 2 decimal places [1 mark] (b) 3 significant figures [1 mark].
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Convert the decimal number 0.625 into a fraction in its simplest form. (2 marks)
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Why Practise Decimals (operations, approximation, significant figures)?
KNEC Aligned
Questions match the KCSE syllabus objectives and exam format exactly.
Detailed Marking Schemes
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