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# Probability and estimates articles

Best maths story books for children
Introduce ratio, pie charts, probability and even simplifying fractions to children with these brilliant maths story books, picture-book presentations of mathematical concepts that primary-school children will love.
Primary numeracy glossary for parents
From area to word problems, TheSchoolRun's primary-school numeracy glossary offers a complete guide to all the maths concepts children are taught in EYFS, KS1 and KS2. Brush up on your own mathematical skills, clear up homework confusion and understand exactly what your child is learning at school by reading our basic definitions (with links to more detailed explanations, teachers' tips and examples).
What is an estimate?
We explain how children are taught to make estimates to check whether their answers are correct and how this skill is applied to more difficult calculations as your child advances through primary school.
What are probability / chance / likelihood?
We explain what probability / chance / likelihood means, how children are taught about probability from Year 5 and the kinds of mathematical problems involving probability they might be asked to solve.
What are two-step and multi-step problems?
We explain what two-step and multi-step problems are and give examples of typical problems a child might be asked to solve in primary school (and how the answer can be worked out!).