Develop children's understanding of using estimation and rounding in calculations with this Year 5 Round to Check Answers Reasoning and Problem Solving resource. It has been differentiated to three levels of challenge and progresses from whole numbers to those with up to two decimal places. Each worksheet includes six reasoning and problem-solving questions, so there are numerous opportunities for pupils to apply their understanding. This resource could be used independently or as part of a small group to either support or further challenge learning.