🔢 Mathematics · Addition & Subtraction
Adding and subtracting (age 8+)
Add and subtract numbers with up to four digits using formal written methods of columnar addition and subtraction
Typical age: 8–9 years
“Can your child line up a sum like '3,842 + 1,765' or '4,301 − 2,658' in columns and work through it correctly — carrying and borrowing across multiple columns?”
0 / 3 mastered