Are your class ready for a challenge when partitioning three-digit numbers? If so, why not give this Year 3 Partition Numbers to 1,000 Discussion Problem a go? This resource provides a complex challenge for children to get stuck into, giving them chance to apply the knowledge they have gained with our varied fluency and problem solving resources. We recommend children working in pairs or small groups so they are able to discuss and reason their ideas before answering. We've added a sample answer to aid discussion too.