1. National Curriculum 2014 (UK)
2. Mathematics
3. Lower Key Stage 2
4. Year 3
5. Number

Addition & Subtraction

Pupils practise solving varied addition and subtraction questions. For mental calculations with two-digit numbers, the answers could exceed 100.
Pupils use their understanding of place value and partitioning, and practise using columnar addition and subtraction with increasingly large numbers up to three digits to become fluent (see Mathematics Appendix 1)

Outcomes

• Add and subtract numbers mentally, including:
  • A three-digit number and ones
    Play Activities 12
    Examples
  • A three-digit number and tens
    Play Activities 22
    Examples
  • A three-digit number and hundreds
    Play Activities 15
    Examples
• Add and subtract numbers with up to three digits, using formal written methods of columnar addition and subtraction
  Play Activities 133
  Examples
• Estimate the answer to a calculation and use inverse operations to check answers
  Play Activities 24
  Examples
• Solve problems, including missing number problems, using number facts, place value, and more complex addition and subtraction
  Play Activities 330
  Examples