Worked Example: Significant Figures
Part of Rounding & Estimation · GCSE GCSE Mathematics revision
This study notes covers Worked Example: Significant Figures within Rounding & Estimation for GCSE Mathematics. Revise Rounding & Estimation in Number for GCSE Mathematics with 13 exam-style questions and 6 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 4 of 6 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 4 of 6
Practice
13 questions
Recall
6 flashcards
Worked Example: Significant Figures
Round 0.005372 to 2 significant figures
Step 1 Find first significant figure
Skip the zeros: 0.005372
5 is the 1st significant figure
Step 2 Identify 2nd s.f. and look at the next digit
0.005372 → 3 is 2nd s.f., look at 7
Step 3 Apply the rule
7 ≥ 5, so round UP: 3 becomes 4
Keep building this topic
Read this section alongside the surrounding pages in Rounding & Estimation. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Rounding & Estimation
Round 4.673 to 1 decimal place.
A student says '3.50 and 3.5 are exactly the same number so they have the same number of significant figures.' Explain why the student is wrong.
Quick Recall Flashcards
13 questions on Rounding & Estimation — practise free
Instant marking, adaptive difficulty, and 6 spaced repetition flashcards. Free until your GCSEs.
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