Mathematics
Number Representation & Place Value
Procedural
7–8 yrs
10 or 100 More or Less
多10或多100，少10或少100
Description
Find 10 or 100 more or less than a given number up to 1000
Mastery Evidence
- 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 your child quickly work out '10 more than 342' or '100 less than 875' in their head — knowing which digit changes and which stays the same?
