# WDM11 Topic Questions — Edexcel IAL Decision Mathematics 1 > Edexcel IAL Decision Mathematics 1: 5 topics with 428 WDM11 topic questions from 16 papers (2019–2026). Browse questions by topic, then open the exact… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/index.md --- Edexcel IAL · Mathematics · A Level Practise WDM11 topic questions by topic. 5 topics from the 2018–current syllabus are drawn from 16 papers (2019–2026). Each topic below opens every past-paper question tagged to its syllabus points. - WDM11 - 16 papers - 428 topic questions - 1,200 marks - Syllabus 2018–current - [Browse WDM11 papers](https://www.examsci.com/past-papers/edexcel-ial/mathematics/decision-mathematics-1-wdm11/) - [All paper codes](https://www.examsci.com/topics/) Core finding **Algorithms on graphs II leads WDM11 with 99 topic questions and 242 marks across 16 papers.** Critical path analysis follows with 98 topic questions and 272 marks. The current 2018–current dataset covers 5 topics, 428 topic questions and 1,200 marks. Each MCQ or structured part counts as one item, and each topic counts only the parts tagged to it, so the ranking reflects exam exposure rather than the number of question stems. Rows also carry paper count, mark total and year range for cross-unit comparison. The native table reproduces every figure in curriculum order. ## Topic question count and mark distribution Topics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a topic are counted for that topic, and percentages are each row's share of the tagged total in that chart. A part tagged to several topics is counted in each bar, so the bars are not a partition of the unit total. ### Questions by topic question items - [Algorithms on graphs II](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs-ii/) (16 papers) — 99 · 23.0% - [Critical path analysis](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/) (16 papers) — 98 · 22.7% - [Linear programming](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/linear-programming/) (16 papers) — 91 · 21.1% - [Algorithms](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/) (16 papers) — 75 · 17.4% - [Algorithms on graphs](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs/) (16 papers) — 68 · 15.8% ### Marks by topic marks - [Linear programming](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/linear-programming/) (16 papers) — 295 · 24.3% - [Critical path analysis](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/) (16 papers) — 272 · 22.4% - [Algorithms on graphs II](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs-ii/) (16 papers) — 242 · 20.0% - [Algorithms](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/) (16 papers) — 204 · 16.8% - [Algorithms on graphs](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs/) (16 papers) — 199 · 16.4% ## Topic comparison matrix Curriculum order is by syllabus number, then alphabetically. Every topic links to its subtopic index. | Topic | Subtopics | Topic questions | Papers | Marks | Years | | | --- | --- | --- | --- | --- | --- | --- | | **[Algorithms](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/)** | 5 | 75 | 16 | 204 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/) | | **[Algorithms on graphs](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs/)** | 3 | 68 | 16 | 199 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs/) | | **[Algorithms on graphs II](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs-ii/)** | 4 | 99 | 16 | 242 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs-ii/) | | **[Critical path analysis](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/)** | 4 | 98 | 16 | 272 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/) | | **[Linear programming](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/linear-programming/)** | 3 | 91 | 16 | 295 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/linear-programming/) | ## Browse all topic questions - [Algorithms](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/) — 75 question items · 16 papers — 5 subtopics · 204 marks · 2019–2026 - [Algorithms on graphs](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs/) — 68 question items · 16 papers — 3 subtopics · 199 marks · 2019–2026 - [Algorithms on graphs II](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs-ii/) — 99 question items · 16 papers — 4 subtopics · 242 marks · 2019–2026 - [Critical path analysis](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/) — 98 question items · 16 papers — 4 subtopics · 272 marks · 2019–2026 - [Linear programming](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/linear-programming/) — 91 question items · 16 papers — 3 subtopics · 295 marks · 2019–2026 ## Other Mathematics paper codes - [FP1 649 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/further-pure-mathematics-1-wfm01/) - [FP2 383 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/further-pure-mathematics-2-wfm02/) - [FP3 392 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/further-pure-mathematics-3-wfm03/) - [M1 701 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/mechanics-1-wme01/) - [M2 637 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/mechanics-2-wme02/) - [M3 440 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/mechanics-3-wme03/) - [P1 645 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-1-wma11/) - [P2 600 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/) - [P3 550 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-3-wma13/) - [P4 432 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-4-wma14/) - [S1 1,111 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-1-wst01/) - [S2 956 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-2-wst02/) - [S3 437 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/statistics-3-wst03/) ## Topic questions: rules and edge cases **Where can I find WDM11 topic questions?** This page groups every WDM11 topic question by topic and syllabus point. Open a topic to see the question numbers, marks and the session each one comes from, then follow the link into the original paper. **How many topics are in the current WDM11 syllabus?** This page lists 5 topics tagged to the current syllabus across 16 WDM11 papers (2019–2026). Topics are ordered by syllabus number, then alphabetically. **How are question counts and marks calculated?** Each MCQ counts as one question item and each structured part counts as one item. Marks come from the official part marks. Only parts whose knowledge graph matches a topic are counted, and a part tagged to more than one topic is counted against each topic, so topic rows describe exam exposure rather than a partition of the paper. **Why is there no topic chart on the D1 index?** The D1 index intentionally stops at the paper-code level. Topic names are only shown after a code is selected, which prevents two units from claiming the same topic phrase or URL. **Which sessions are included?** All sessions tagged to the current syllabus are included, covering 2019–2026. Questions without a recognised syllabus tag are treated as current so they do not disappear from the index. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/