Mrs Mactivity

Year 1 Spring Block 1: Addition and Subtraction

Spring Block 1: Addition and Subtraction Within 20 (Year 1)

Support pupils as they develop secure addition and subtraction within 20 with this Year 1 block, aligned with the White Rose small steps and mapped to the Year 1 National Curriculum. Pupils build fluency with number bonds, counting on, making 10 and related addition and subtraction facts.

The lessons help pupils move from practical counting strategies towards more efficient calculation methods. Through visual representations, part-whole models and structured reasoning, pupils learn to add and subtract within 20, including calculations that cross 10.

Week 1 small steps

  • Add by counting on
  • Add by counting on (practical contexts)
  • Number bonds within 10 and 20
  • Find and make number bonds
  • Add using number bonds

Week 2 small steps

  • Add by making 10
  • Add by making 10 (part-part-whole models)
  • Subtraction – not crossing 10
  • Subtraction – not crossing 10 (word problems)

Week 3 small steps

  • Subtraction – crossing 10 (1)
  • Subtraction – crossing 10 (2)
  • Related facts (addition and subtraction)

Week 4 small steps

  • Compare number sentences
  • Use symbols to compare calculations
  • Reasoning and problem-solving within 20

National Curriculum objectives

  • Represent and use number bonds and related subtraction facts within 20
  • Add and subtract one-digit and two-digit numbers to 20, including zero
  • Solve one-step problems involving addition and subtraction using concrete objects and pictorial representations

Part of Maths Masters

These Year 1 addition and subtraction within 20 resources form part of Maths Masters, our complete primary maths scheme of work. Explore the full Year 1 Spring term sequence for structured progression, interactive teaching slides and differentiated maths activities.

Explore Year 1 Spring Maths

Download our free Year 1 maths yearly overview | Explore maths subject leader resources

Building fluency with addition and subtraction within 20

This Year 1 addition and subtraction within 20 block helps pupils strengthen calculation strategies through number bonds, making 10, related facts and practical representations. The sequence supports pupils as they move beyond counting small sets and begin using known facts to solve calculations more efficiently.

Pupils explore addition by counting on, making 10 and using number bonds before moving into subtraction that does and does not cross 10. Visual models, part-whole representations and comparison tasks help pupils understand the relationship between addition and subtraction and explain their methods clearly.

What’s included

  • Detailed Year 1 maths lesson plans linked to White Rose small steps
  • Interactive teaching slides with clear modelling and guided practice
  • Differentiated addition and subtraction within 20 worksheets for Year 1
  • Practical maths activities for number bonds, making 10 and subtraction strategies
  • Vocabulary prompts, reasoning questions and opportunities for mathematical discussion

Aligned with the White Rose small steps and the Year 1 National Curriculum, this block supports whole-class teaching, guided maths groups and independent fluency practice throughout the Spring term.

If you are looking for Year 1 addition and subtraction worksheets, addition and subtraction within 20 resources or a complete Spring Block 1 maths unit, this block provides planning, slides and differentiated maths resources ready to teach.