KS1 Number bonds over 20 Worksheets

Number bonds over 20 are primarily taught in Year 2 as part of the Key Stage 1 curriculum. By this stage, children have typically mastered number bonds to 10 and 20 and are ready to apply these patterns to larger numbers. The National Curriculum expects Year 2 pupils to recall and use addition and subtraction facts to 20 fluently, and to derive and use related facts up to 100. Our worksheets specifically support Year 2 teachers in meeting these expectations by providing targeted practice with numbers beyond 20. This builds the foundation for more complex mental arithmetic in Key Stage 2, where children will continue to use these relationships when working with increasingly larger numbers and more sophisticated calculation methods.

Yes, every worksheet in this collection comes with a complete answer sheet. This feature makes our number bonds over 20 resources particularly useful for busy teachers and parents, saving valuable time that would otherwise be spent checking work. The answer sheets allow pupils to self-mark during independent practice sessions, promoting mathematical independence and immediate feedback. For teachers, they streamline the marking process and enable quick identification of misconceptions that need addressing. Parents supporting home learning can confidently check their child's understanding without needing to work through each calculation themselves. All worksheets are provided as downloadable PDFs, so you can print multiple copies as needed or display them on interactive whiteboards during whole-class teaching. The answer sheets maintain the same layout as the main worksheet for easy reference.