Mathematics·Addition & Subtraction·procedural
Mental addition and subtraction (age 6+)
Add and subtract a two-digit number and ones mentally and using concrete/pictorial representations
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
- Calculate 36 + 7 = 43 using objects or mentally
- Calculate 52 − 4 = 48 using a number line or mentally
- Explain bridging through 10 when adding ones to a two-digit number
Assessment prompt
Can Mental addition and subtraction (age 6+) work out '36 + 7' or '42 − 5' in their head — keeping the tens in place and only adjusting the ones?
Standards alignment
Maths/Y2/AS/4GB · uk-nc-2013
Add and subtract two-digit numbers and ones
The national curriculum in England: Key stages 1 and 2 framework document · Key Stage 1