🔢 Mathematics · Addition & Subtraction
Mental addition and subtraction (age 9+)
Add and subtract numbers mentally with increasingly large numbers, using place-value knowledge and derived facts
Typical age: 9–10 years
“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?”
0 / 3 mastered