Mental addition and subtraction (age 9+)
Add and subtract numbers mentally with increasingly large numbers, using place-value knowledge and derived facts
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Can your child work out something like '4,700 − 1,300' in their head using what they know about place value — without needing to write it all out?
Add and subtract numbers mentally with increasingly large numbers, using place-value knowledge and derived facts
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Check understanding
- Mentally calculate 45,000 + 8,000
- Mentally subtract 3,200 from 10,000 by counting up
- Use near-doubles: 2,500 + 2,600 = 5,100
“Can your child work out something like '4,700 − 1,300' in their head using what they know about place value — without needing to write it all out?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Addition & Subtraction
- Age range
- Ages 9–10