🔢 Mathematics · Number Representation & Place Value
10 or 100 More or Less
Find 10 or 100 more or less than a given number up to 1000
Typical age: 7–8 years
“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?”
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- Place Value to 1000
Many PV problems involve finding 10/100 more or less
- 1000 More or LessREQUIRED
Finding 1000 more/less extends finding 10/100 more/less
- Mentally adding tens to 3-digit numbersREQUIRED
Extends finding 10 more/less to adding arbitrary multiples of 10
- Mentally adding hundreds to 3-digit numbersREQUIRED
Extends finding 100 more/less to adding arbitrary multiples of 100