0607 · Cambridge IGCSE
0607/21
(Extended, Non-calculator)
International Mathematics · June 2024 · Variant 1
Relative difficulty
Analysis source: Cambridge Assessment International Education
3.5 / 5
220
280 min
Sequences and Sums of Powers
Cohort performance
Session statistics from official examination reports
Total marks
220
Duration
280 min
Session difficulty
3.5 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
High-scoring candidates differentiated themselves in the algebraic manipulation and function-sketching components.
In Paper 21, multi-step algebraic rationalisation of surds and log simplifications carried heavy weight relative to the short time frame.
In Paper 41, the coordinate geometry, circle theorems, and 3D surface area problems yielded a significant concentration of marks.
For Paper 61, the ability to translate a geometric visual (the Lorenz Curve approximation) into a sum of polynomial areas was the single largest differentiator.
Question difficulty map
How candidates performed on each question in this series
No data available in official reports
Assessment objectives
Skill and AO weighting from official examiner commentary
Skill weighting
Shows the skill mix this paper tested most heavily.
Conceptual Algebraic
Weight: 5100%Calculator Operations
Weight: 480%Multi-Perspective-step Geometric
Weight: 360%Modelling /
Weight: 240%Investigation
Weight: 120%
Method marks watchlist
Where working, steps, or method marks were commonly lost
No data available in official reports
Recurring mistakes across years
Themes examiners flag in multiple recent sessions for this subject
No data available in official reports
Question choice intelligence
Mean scores and popularity for optional questions (HKDSE electives)
No data available in official reports
Level exemplars
What candidate scripts at each grade level looked like
No data available in official reports
Grade & admission context
How marks relate to grade thresholds and entry standards
Report type
Cambridge Principal Examiner Report — component performance and international standards
Level A*
Approx. 86% of maximum mark
Level A
Approx. 72% of maximum mark
Level B
Approx. 55% of maximum mark
Level C
Approx. 38% of maximum mark
Level D
Approx. 26% of maximum mark
Level E
Approx. 15% of maximum mark
Deep insights
What top candidates did
Techniques and approaches examiners rewarded in this series
No data available in official reports
Command word playbook
How to match each command word to the expected response style
Match the expected response style for “Solve” questions.
Match the expected response style for “Find” questions.
Show formula, substitution, and unit; method marks need visible working.
Match the expected response style for “Sketch” questions.
Match the expected response style for “Write” questions.
Match the expected response style for “Simplify” questions.
Match the expected response style for “Show” questions.
State features in sequence or list observable properties — do not explain causes unless asked.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.7
Min per mark: 1.7
Min per mark: 0.2
Syllabus traceability
Topics linked to questions and mark weighting in this session
Sequences
30 marks this session
Algebraic manipulation
14 marks this session
Transformations
11 marks this session
Functions
11 marks this session
Sketching graphs on a calculator
11 marks this session
MCQ trap analytics
Commonly chosen wrong options from examiner commentary
No data available in official reports
Topic heatmap across years
Mark concentration by topic and exam year for this subject
Mark intensity
Sequences
Algebraic manipulation
Functions
Similarity
Surface area and volume
Pythagoras’ theorem
Probability of combined events
Transformations
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
Paper 21 (Extended):
Paper 41 (Extended):
Paper 61 (Extended Investigation and Modelling):
Marks you can still earn
Where valid approaches outside the mark scheme may still gain credit
No data available in official reports
Practise what examiners flagged
Target weak topics from this report inside the Revui app
Sequences
30 marks this session
Practise in RevuiAlgebraic manipulation
14 marks this session
Practise in RevuiTransformations
11 marks this session
Practise in RevuiFunctions
11 marks this session
Practise in RevuiSketching graphs on a calculator
11 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
High-scoring candidates differentiated themselves in the algebraic manipulation and function-sketching components.
- 2Message
In Paper 21, multi-step algebraic rationalisation of surds and log simplifications carried heavy weight relative to the short time frame.
- 3Message
In Paper 41, the coordinate geometry, circle theorems, and 3D surface area problems yielded a significant concentration of marks.
- 4Message
For Paper 61, the ability to translate a geometric visual (the Lorenz Curve approximation) into a sum of polynomial areas was the single largest differentiator.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2024 2024
International Mathematics
High-scoring candidates differentiated themselves in the algebraic manipulation and function-sketching components. In Paper 21, multi-step algebraic rationalisation of surds and log simplifications carried heavy weight relative to the short time frame. In Paper 41, the coordinate
High-scoring candidates differentiated themselves in the algebraic manipulation and function-sketching components.
In Paper 21, multi-step algebraic rationalisation of surds and log simplifications carried heavy weight relative to the short time frame.
In Paper 41, the coordinate geometry, circle theorems, and 3D surface area problems yielded a significant concentration of marks.
- Total marks
- 220
- Duration
- 280 min
- Session difficulty
- 3.5 / 5
Session analysis
High-scoring candidates differentiated themselves in the algebraic manipulation and function-sketching components. In Paper 21, multi-step algebraic rationalisation of surds and log simplifications carried heavy weight relative to the short time frame. In Paper 41, the coordinate geometry, circle theorems, and 3D surface area problems yielded a significant concentration of marks. For Paper 61, the ability to translate a geometric visual (the Lorenz Curve approximation) into a sum of polynomial areas was the single largest differentiator. Candidates who carefully partitioned the shapes under the curve secured top marks, while those struggling with the expansion of double brackets lost substantial momentum.
Updated Jun 13, 2026
Paper breakdown
Paper 21 (Extended):
Paper 41 (Extended):
Paper 61 (Extended Investigation and Modelling):
Top chapters
Exam structure insights
Marks by chapter
See where the marks were concentrated so revision time goes to the highest-value topics.
Mark accessibility
Estimate which marks were basic, mid-level, or high-difficulty.
82% within easy or medium reach
Command word frequency
Spot common command words so answers match the expected response style.
Question type mix
Compare the mark share of each paper section and question type.
Structured Structured-Response
120·11·55%
Short Answer
40·16·18%
Mathematical Investigation
30·7·14%
Modelling
30·6·14%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 21 (Extended)1
5.74 m/minPaper 41 (Extended)
0.60 m/minPaper 61 (Part A In…
0.60 m/minTotal marks
261
Total time
135 min
Avg pace
1.93
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
3D Pythagoras and Trigonometry
5%5%
Vectors and Transformations (Shear/Stretch)
4%4%
Logarithmic and Exponential Modelling Graphing
4%4%
Exam tips
Paper format
- Duration
- 1h 30min
- Total marks
- 75
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.