Use this Year 5 Inverse Operations (Addition and Subtraction) Varied Fluency resource to give children plenty of practise using inverse operations. The questions included with this resource are differentiated to three levels of challenge, meaning there is something for everyone in your class. An answer page has also been provided to make your marking as simple as possible. Why not encourage your children to mark their own work, or that of a partner, to help them develop their confidence with addition and subtraction?