Number - addition and subtraction

add and subtract numbers with up to 4 digits using the formal written methods of columnar addition and subtraction where appropriate

estimate and use inverse operations to check answers to a calculation

solve addition and subtraction two-step problems in contexts, deciding which operations and methods to use and why

On this page, you will find increasingly challenging tasks that require multiples steps in order to solve. The tasks might not be exactly what this objective intends, but they are certainly highly valuable in the development of fluent problem solvers!