# WDM11 Critical path analysis Topic Questions > Edexcel IAL WDM11: every Critical path analysis topic question from 16 papers (2019–2026), grouped by syllabus point. 98 questions, 272 marks, with direct… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/index.md --- Edexcel IAL · Mathematics · WDM11 · A Level Every WDM11 Critical path analysis 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 - 4 subtopics - 98 topic questions - 16 papers - 272 tagged marks - [Back to Critical path analysis](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/) - [All paper codes](https://www.examsci.com/topics/) Core finding **4.4 Total float. Gantt (cascade) charts. Scheduling. is the most frequently assessed subtopic in Critical path analysis, with 43 topic questions and 114 marks across 15 papers.** 4.3 Algorithm for finding the critical path. Earliest and… follows with 41 topic questions and 98 marks. The topic contains 4 subtopics, 98 topic questions and 272 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. ## 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 - [4.4 Total float. Gantt (cascade) charts. Scheduling.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-4-total-float-gantt-cascade-charts-scheduling/) (15 papers) — 43 · 42.2% - [4.3 Algorithm for finding the critical path. Earliest and latest event times. Earliest and latest start and finish times for activities.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-3-algorithm-for-finding-the-critical-path-earliest-and-latest-event-times-earliest/) (16 papers) — 41 · 40.2% - [4.1 Modelling of a project by an activity network, from a precedence table.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-1-modelling-of-a-project-by-an-activity-network-from-a-precedence-table/) (12 papers) — 14 · 13.7% - [4.2 Completion of the precedence table for a given activity network.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-2-completion-of-the-precedence-table-for-a-given-activity-network/) (4 papers) — 4 · 3.9% ### Marks by subtopic marks - [4.4 Total float. Gantt (cascade) charts. Scheduling.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-4-total-float-gantt-cascade-charts-scheduling/) (15 papers) — 114 · 40.3% - [4.3 Algorithm for finding the critical path. Earliest and latest event times. Earliest and latest start and finish times for activities.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-3-algorithm-for-finding-the-critical-path-earliest-and-latest-event-times-earliest/) (16 papers) — 98 · 34.6% - [4.1 Modelling of a project by an activity network, from a precedence table.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-1-modelling-of-a-project-by-an-activity-network-from-a-precedence-table/) (12 papers) — 61 · 21.6% - [4.2 Completion of the precedence table for a given activity network.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-2-completion-of-the-precedence-table-for-a-given-activity-network/) (4 papers) — 10 · 3.5% ## 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 | | | --- | --- | --- | --- | --- | --- | | **[4.1 Modelling of a project by an activity network, from a precedence table.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-1-modelling-of-a-project-by-an-activity-network-from-a-precedence-table/)** | 14 | 12 | 61 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-1-modelling-of-a-project-by-an-activity-network-from-a-precedence-table/) | | **[4.2 Completion of the precedence table for a given activity network.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-2-completion-of-the-precedence-table-for-a-given-activity-network/)** | 4 | 4 | 10 | 2021–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-2-completion-of-the-precedence-table-for-a-given-activity-network/) | | **[4.3 Algorithm for finding the critical path. Earliest and latest event times. Earliest and latest start and finish times for activities.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-3-algorithm-for-finding-the-critical-path-earliest-and-latest-event-times-earliest/)** | 41 | 16 | 98 | 2019–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-3-algorithm-for-finding-the-critical-path-earliest-and-latest-event-times-earliest/) | | **[4.4 Total float. Gantt (cascade) charts. Scheduling.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-4-total-float-gantt-cascade-charts-scheduling/)** | 43 | 15 | 114 | 2020–2026 | [Open topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-4-total-float-gantt-cascade-charts-scheduling/) | ## Browse every topic question - [4.1 Modelling of a project by an activity network, from a precedence table.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-1-modelling-of-a-project-by-an-activity-network-from-a-precedence-table/) — 14 question items · 12 papers — 61 marks · 2019–2026 - [4.2 Completion of the precedence table for a given activity network.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-2-completion-of-the-precedence-table-for-a-given-activity-network/) — 4 question items · 4 papers — 10 marks · 2021–2026 - [4.3 Algorithm for finding the critical path. Earliest and latest event times. Earliest and latest start and finish times for activities.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-3-algorithm-for-finding-the-critical-path-earliest-and-latest-event-times-earliest/) — 41 question items · 16 papers — 98 marks · 2019–2026 - [4.4 Total float. Gantt (cascade) charts. Scheduling.](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/critical-path-analysis/4-4-total-float-gantt-cascade-charts-scheduling/) — 43 question items · 15 papers — 114 marks · 2020–2026 ## Other topics in WDM11 - [Algorithms 75 question items](https://www.examsci.com/topics/edexcel-ial/mathematics/decision-mathematics-1-wdm11/algorithms/) - [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/) - [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 Critical path analysis contain?** This page lists 4 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/critical-path-analysis/