This Year 3 3-Digit Numbers and Ones activity is made up of three varied fluency and three reasoning and problem-solving questions, giving children a six-question smorgasbord of all things add and subtract 1s. The worksheet can be used as a whole, or can be cut up and used individually - whatever suits your needs. 3-digit numbers are the main focus as children get to grips with adding and subtracting 1s. An answer sheet is also provided so they can see how well they are getting on!