# WDM11 Algorithms Topic Questions > Edexcel IAL WDM11: every Algorithms topic question from 16 papers (2019–2026), grouped by syllabus point. 75 questions, 204 marks, with direct links into… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/index.md --- Edexcel IAL · Mathematics · WDM11 · A Level Every WDM11 Algorithms topic question from the 2018–current syllabus, drawn from 16 papers (2019–2026) and grouped by syllabus point. Each row opens a page listing the exact question numbers, marks and a direct link into the paper. These are questions by topic, not full papers, so you can revise one topic at a time. - WDM11 - 5 subtopics - 75 topic questions - 16 papers - 204 tagged marks - [Back to Algorithms](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/) - [All paper codes](https://www.examsci.com/topics/) Core finding **1.2 Bin packing. is the most frequently assessed subtopic in Algorithms, with 33 topic questions and 84 marks across 16 papers.** 1.3 Bubble sort. follows with 15 topic questions and 37 marks. The topic contains 5 subtopics, 75 topic questions and 204 marks in total. Rows count only the parts tagged to that subtopic, keep the same colour in both charts and repeat paper count, tagged marks and year range in the native table. Every row opens the matching past-paper question list, which links on to the exact paper and the practice entry point. ## Topic question count and mark distribution Subtopics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a subtopic are counted for it, and percentages are each row's share of the tagged total in that chart. A part tagged to several subtopics is counted in each bar, so the bars are not a partition of the topic total. ### Questions by subtopic question items - [1.2 Bin packing.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-2-bin-packing/) (16 papers) — 33 · 44.0% - [1.3 Bubble sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-3-bubble-sort/) (9 papers) — 15 · 20.0% - [1.4 Quick sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-4-quick-sort/) (12 papers) — 12 · 16.0% - [1.1 The general ideas of algorithms and the implementation of an algorithm given by a flow chart or text.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-1-the-general-ideas-of-algorithms-and-the-implementation-of-an-algorithm-given-by-a/) (5 papers) — 9 · 12.0% - [1.5 Binary search](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-5-binary-search/) (5 papers) — 6 · 8.0% ### Marks by subtopic marks - [1.2 Bin packing.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-2-bin-packing/) (16 papers) — 84 · 41.2% - [1.4 Quick sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-4-quick-sort/) (12 papers) — 43 · 21.1% - [1.3 Bubble sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-3-bubble-sort/) (9 papers) — 37 · 18.1% - [1.1 The general ideas of algorithms and the implementation of an algorithm given by a flow chart or text.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-1-the-general-ideas-of-algorithms-and-the-implementation-of-an-algorithm-given-by-a/) (5 papers) — 22 · 10.8% - [1.5 Binary search](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-5-binary-search/) (5 papers) — 18 · 8.8% ## Subtopic comparison matrix Curriculum order is by syllabus number, then alphabetically. Every row links to the matching past-paper question list. | Subtopic | Topic questions | Papers | Marks | Years | | | --- | --- | --- | --- | --- | --- | | **[1.1 The general ideas of algorithms and the implementation of an algorithm given by a flow chart or text.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-1-the-general-ideas-of-algorithms-and-the-implementation-of-an-algorithm-given-by-a/)** | 9 | 5 | 22 | 2021–2025 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-1-the-general-ideas-of-algorithms-and-the-implementation-of-an-algorithm-given-by-a/) | | **[1.2 Bin packing.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-2-bin-packing/)** | 33 | 16 | 84 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-2-bin-packing/) | | **[1.3 Bubble sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-3-bubble-sort/)** | 15 | 9 | 37 | 2020–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-3-bubble-sort/) | | **[1.4 Quick sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-4-quick-sort/)** | 12 | 12 | 43 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-4-quick-sort/) | | **[1.5 Binary search](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-5-binary-search/)** | 6 | 5 | 18 | 2021–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-5-binary-search/) | ## Browse every topic question - [1.1 The general ideas of algorithms and the implementation of an algorithm given by a flow chart or text.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-1-the-general-ideas-of-algorithms-and-the-implementation-of-an-algorithm-given-by-a/) — 9 question items · 5 papers — 22 marks · 2021–2025 - [1.2 Bin packing.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-2-bin-packing/) — 33 question items · 16 papers — 84 marks · 2019–2026 - [1.3 Bubble sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-3-bubble-sort/) — 15 question items · 9 papers — 37 marks · 2020–2026 - [1.4 Quick sort.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-4-quick-sort/) — 12 question items · 12 papers — 43 marks · 2019–2026 - [1.5 Binary search](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/1-5-binary-search/) — 6 question items · 5 papers — 18 marks · 2021–2026 ## Other topics in WDM11 - [Algorithms on graphs 68 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs/) - [Algorithms on graphs II 99 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms-on-graphs-ii/) - [Critical path analysis 98 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/) - [Linear programming 91 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/linear-programming/) ## Topic question rules and edge cases **How many subtopics does Algorithms contain?** This page lists 5 subtopics tagged to the current syllabus. They are ordered by syllabus number, then alphabetically, and each row opens a page of matching past-paper questions. **How are the subtopic question and mark totals calculated?** A multiple-choice question contributes one item and its marks to every subtopic it is tagged with. A structured question contributes one item per tagged part, and that part’s marks; untagged parts of the same question are not counted here. A part tagged to several subtopics therefore appears under each of them. **Why do some subtopics have no numbered prefix?** Practical-skills statements and some syllabus bullets are unnumbered. Numbered statements come first; unnumbered statements and ties are sorted alphabetically. **Is the LaTeX rendered without JavaScript?** Yes. Subtopics that contain formulas are converted to static KaTeX HTML during the build, and the KaTeX stylesheet is served from the same site. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/