What percentage is each grade in IGCSE Mathematics B?
Grade boundaries change every session, so percentages aren't fixed. Based on the Edexcel June 2025 boundaries for overall (9–1), here's the percentage needed for each grade in Mathematics B (4MB1).
| Grade | Min mark | Min percentage |
|---|---|---|
| 9 | 255/300 | 85% |
| 8 | 216/300 | 72% |
| 7 | 178/300 | 60% |
| 6 | 143/300 | 48% |
| 5 | 108/300 | 36% |
| 4 | 74/300 | 25% |
| 3 | 57/300 | 19% |
Overall (9–1) · maximum mark 300 · June 2025.
FAQ
What percentage is a 9 in IGCSE Mathematics B?
In June 2025 (Overall (9–1)), a 9 needed about 85% (255/300). Boundaries shift slightly each session.
What percentage is a pass (4) in IGCSE Mathematics B?
A grade 4 needed roughly 25% in June 2025. Grade 4 / C is generally treated as a standard pass.
Are these IGCSE Mathematics B percentages official?
They are derived from the official Edexcel grade threshold tables. Boundaries are set per session, so use these as a guide and confirm with your exam board.