Year 5 Subtraction - In stage 6, children continue to use the standard column method, but with larger numbers. They will also progress to using this method to subtract decimal numbers of different sizes. This stage introduces the concept of a place holder - Primary School Maths Operations - Parent, Teacher and Child support guide. • Year 5 Subtraction - Stage 6 - Primary Sc... Help support your child with their maths learning and to achieve their end of year expectations.