11+ Maths: Solving Data-Based Reasoning Questions (CEM & GL)
19 October 2026
What are data-based reasoning questions
Data-based reasoning questions in the 11+ test your child's ability to interpret and use information from tables, charts, and graphs. These questions appear in both CEM and GL formats and can cover a range of data sources, such as bar charts, pictograms, frequency tables, and sometimes even Venn diagrams.
Recognising different data formats
Your child may be presented with information in various forms: a bar graph showing favourite sports, a table of class test scores, or a pictogram representing pets owned by classmates. It's important for children to practise reading each type carefully, noting titles, labels, and units.
Solving multi-step data questions
Many data reasoning questions require more than simply reading a value. For example, your child might need to compare two sets of data, calculate a difference, or work out a total. Encourage them to break down each question into smaller steps and check their working as they go.
Key insight: Practice with a variety of data sources is essential
Children become more confident when they see different types of data and learn to extract the information needed. Regular exposure to tables, charts, and graphs helps them spot patterns and avoid common mistakes, such as misreading scales or missing key details.
Supporting your child at home
You can help by discussing real-life data together, like reading a weather chart, following sports results, or looking at a bus timetable. Ask your child questions that encourage them to find and compare information, so they build the habit of thinking critically about data.
