Mental and written addition and subtraction
Solve addition and subtraction problems using mental and written methods, including problems involving numbers, quantities, and measures
Suggested ages 6–7
Learning journey
Your child is building strong foundations in addition and subtraction — learning to add and subtract numbers fluently within 20, understanding the relationship between these operations, and applying various mental strategies to solve problems.
Evidence of understanding
- Solve a two-step problem: 'I had 35p, spent 12p, then found 5p. How much now?'
- Choose an appropriate method (mental or written) for a given problem
- Solve problems involving measures, e.g. 'a ribbon is 45cm, I cut off 18cm'
Assessment prompt
If Mental and written addition and subtraction is given a problem involving lengths, weights, or prices, can they decide whether to add or subtract and carry out the calculation correctly?
Standards alignment
Solve problems using objects and representations
The national curriculum in England: Key stages 1 and 2 framework document · Key Stage 1
Solve problems using mental and written methods
The national curriculum in England: Key stages 1 and 2 framework document · Key Stage 1