MathematicsAddition & SubtractionAges 9–10
Fluent addition and subtraction (age 9+)
Fluently add and subtract whole numbers with more than four digits using the standard columnar algorithm
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Check understanding
- Calculate 34,567 + 28,945 using columnar addition
- Calculate 500,000 − 234,178 using columnar subtraction with multiple exchanges
- Add three five-digit numbers in a single column layout
“Can your child accurately add or subtract large numbers — like '23,846 + 14,579' — using the column method, carrying and borrowing correctly however many columns it takes?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Addition & Subtraction
- Age range
- Ages 9–10