Year 1 Missing Number Problems (Within 20)

(6 resources)
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What's included?
Challenging Year 1 resources for missing number problems within 20, aligning with KS1 Maths objectives for algebraic thinking and inverse operations. Activities build strong reasoning skills, requiring pupils to apply their knowledge of addition and subtraction relationships to find unknown values. This small step is essential for achieving national curriculum mastery in flexible calculation and problem-solving. The CS Maths Scheme provides varied and engaging problems to consolidate this relational understanding.
Full step description and curriculum objectives
Addition and Subtraction (within 20)
Place Value (within 50)
Independent Tasks
Activities that help pupils practise, apply and secure their understanding after the main teaching input.
Resources at a glance
  • Worksheet
    Varied Fluency
    Consolidate and secure understanding of key concepts with three fluency-based questions.
  • Worksheet
    Reasoning and Problem Solving
    Promote mathematical reasoning and develop problem-solving skills with three different question types.