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KS1 algebra – Addition and subtraction worksheet

What's included?

PDF worksheet with 20 questions

Key Stage

KS1

Age

Years 1-2

Subjects

Algebra is simply a way of thinking about numbers, patterns and relationships – concepts that children in KS1 are already beginning to grasp through basic arithmetic.

This basic algebra worksheet for KS1 makes the transition from arithmetic to algebra seamless and enjoyable. The worksheet provides 20 simple equations that help children become familiar with using symbols to represent numbers.

If your students can add and subtract, they are ready to take their first steps into algebra!

Why introduce algebra in KS1?

Teaching algebra at an early stage has several benefits:

Develops logical thinking

Algebra encourages students to think critically and solve problems systematically. By using simple equations, children learn how to analyse and manipulate numbers rather than just memorising answers.

Builds stronger number sense

Introducing variables like a, b, and c in equations helps children understand that numbers can be represented in different ways. This deepens their grasp of mathematical relationships.

Prepares for future learning

Algebra is a fundamental part of the KS2 and KS3 curriculum. A strong foundation in KS1 makes more advanced concepts, such as solving for unknowns and recognising patterns, much easier later on.

Encourages a growth mindset

When children succeed in early algebra tasks, they develop confidence in their problem-solving abilities. This positive experience can help prevent maths anxiety in later years.


    Where does algebra fit in the KS1 curriculum?

    While the national curriculum does not formally introduce algebra in KS1, many of its underlying principles are present in the Number and Geometry strands. For example:

    • Recognising patterns and sequences – Children learn to identify relationships between numbers, a key algebraic skill.
    • Using number nonds and missing number problems – Finding the missing number in an equation (e.g. 5 + __ = 10) is an early form of algebra.
    • Understanding the equals sign – Recognising that expressions on both sides of an equation must be balanced is an essential algebraic concept.

    By incorporating simple algebra activities into everyday maths lessons, you can help students develop a deeper understanding of how numbers work, setting them up for success in later years.

    To find out more about the resources available from Primary Leap, visit primaryleap.co.uk. Browse algebra games.

    KS1 algebra addition and subtraction worksheet
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    KS1 algebra – Addition and subtraction worksheet
    PrimaryMaths

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