Maths
Adding & Subtracting Ones and Tens Mentally
Add and subtract a three-digit number and ones or tens mentally, including across boundaries.
MathsAge 9+25 minutes
What this topic covers
- Add and subtract ones from a three-digit number mentally.
- Add and subtract tens from a three-digit number mentally.
- Cross a tens or hundreds boundary using 'make ten' or 'make a hundred'.
Core concept summaries
Key ConceptsOnes and Tens with HundredsCrossing Ten or a HundredWhich Digit Moves?
Practice formats pupils may meet
NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.
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