Pupils should be able to: 

• 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.

Useful Websites:

BBC: Adding 3-digit and 1-digit numbers together	Oak Academy: Addition and subtraction
BBC: Add 3-digit and 2-digit numbers
BBC: Add two 3-digit numbers
BBC: Add numbers with up to 4 digits together
BBC: Subtract a 1-digit number from a 3-digit number
BBC: Subtract a 2-digit number from a 3-digit number
BBC: Subtract two 3-digit numbers
BBC: Efficient addition and subtraction methods