This Year 4 Subtract Two 4-Digit Numbers (Practical) Reasoning and Problem Solving activity is the perfect addition to your lesson on subtracting two 4-digit numbers. This resource gives children plenty of opportunities to solve problems using formal written methods where two 4-digit numbers are subtracted to give an answer. This resource does not include calculations with exchanges. We have also provided an answer sheet to help make marking a little bit easier for you. Give it a try today!