Topic 1.103 min read
1.10 Significant Figures
Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) digit. They represent the greatest accuracy possible with the instrument being used.
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1.10 Significant Figures
What is it?
Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) digit. They represent the greatest accuracy possible with the instrument being used.
In simple words
1.10 Significant Figures is a core idea in this chapter. Learn the meaning first, then the main parts, then one clear example.
Recommended for Class 9
Full school-level explanation
Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) digit. They represent the greatest accuracy possible with the instrument being used.
Why it matters
Understanding 1.10 Significant Figures helps you answer definition, explanation, and application questions in this chapter.
Deeper understanding
Go deeper on 1.10 Significant Figures: connect the definition to reasons, relationships, exceptions, and exam wording.
Exam focus
Key Point 1
Key Point 2
Key Point 3
Key Point 4
Exam focus
Quick revision
- Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) dig
For long answers on 1.10 Significant Figures: define clearly → explain the main parts → give one example → state one exam caution.
Exam Focus
Exam Focus
Important points
- Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) dig
Common exam traps
- Do not write about 1.10 Significant Figures without a clear definition.
- Do not mix this idea with a neighbouring chapter concept.
Long question structure
Definition → key parts → example → exam caution
Common Mistakes
Common Mistakes
- Mistake
Do not write about 1.10 Significant Figures without a clear definition.
- Mistake
Do not mix this idea with a neighbouring chapter concept.
- Mistake
Do not list facts without showing how they connect.
Revision Zone
60-Second Revision
Quick cues from this topic — use them for last-minute revision.
Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) dig
Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) digit. They represent the greatest accuracy
- Definition
- Significant figures are all the accurately known digits in a measurement, plus the first doubtful (or uncertain) digit. They represent the greatest accuracy
- Critical warning
- Do not write about 1.10 Significant Figures without a clear definition.
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Exam Practice
Define
Q1. Define 1.10 Significant Figures.
Explain
Q2. Explain the main ideas in 1.10 Significant Figures.
Example
Q3. Give one clear example of 1.10 Significant Figures and say why it fits.
Mistake
Q4. State one common mistake students make about 1.10 Significant Figures.
Exam note
Q5. Write a short exam note on 1.10 Significant Figures: definition, two points, one example.
Sources & References
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.