The DFE Ready to Progress document identifies the most important areas in mathematics that children need as they progress from year 1 to year 6. These important concepts are referred to as ready-to-progress criteria (RTP). The ready-to-progress criteria (RTP) have been selected in order to develop pupils’ conceptual understanding of the primary maths curriculum and, if all criteria are taught and met, pupils will be able to more easily access many other areas of mathematics.