Additions and Subtractions is a completely interactive maths lesson that will teach 3rd grade learners how to add and subtract numbers with up to 4 digits using the formal written methods of columnar addition and subtraction where appropriate. Buy this great value bundle of interactive lessons today to save you hours of planning and don't forget to leave an honest review if you download this worksheet for TPT credit :)The lesson contains 36 interactive slides in stunning design and dynamic graph