Mathematics·Number Representation & Place Value·procedural
10 or 100 More or Less
Find 10 or 100 more or less than a given number up to 1000
Suggested ages 7–8
Learning journey
Your child is mastering larger numbers — learning to read, write, and work with numbers up to 1000 by understanding how hundreds, tens, and ones work together.
Evidence of understanding
- Given a three-digit number, state what is 10 more and 10 less
- Given a three-digit number, state what is 100 more and 100 less
- Explain the strategy using place-value understanding (e.g. only the tens/hundreds digit changes)
Assessment prompt
Can 10 or 100 More or Less quickly work out '10 more than 342' or '100 less than 875' in their head — knowing which digit changes and which stays the same?
Standards alignment
2.NBT.8US · ccss-math
Mentally add or subtract 10 or 100
Common Core State Standards for Mathematics · 2
Ma/KS2/Y3/NPV/1GB · uk-nc-2013
Count in multiples
The national curriculum in England: Key stages 1 and 2 framework document · Key Stage 2