Subtracting within 20 - Challenge

About This Worksheet

This Year 1 Addition and Subtraction worksheet focusing on Subtracting within 20 provides invaluable practice for young learners. It directly aligns with the National Curriculum for Mathematics, specifically targeting the objective of subtracting one-digit and two-digit numbers to 20, including zero. By working through these problems, children reinforce their understanding of number bonds, place value, and the relationship between addition and subtraction. The worksheet encourages the development of essential mathematical skills such as counting backwards, identifying the 'take away' concept, and finding the 'difference' between two numbers. Furthermore, this worksheet builds confidence in Year 1 students as they tackle more challenging subtraction problems. The carefully designed questions encourage them to apply their knowledge in different contexts, fostering a deeper understanding of the topic. The ability to subtract within 20 is a foundational skill that is crucial for future mathematical learning. It also has real-world applications, such as calculating change when shopping or sharing objects equally. This Subtracting within 20 worksheet is a valuable tool for teachers and parents to support Year 1 children in mastering this important mathematical concept, solidifying their understanding and preparing them for more advanced mathematical challenges. Regular practice with worksheets like this helps to build fluency and automaticity, freeing up cognitive resources for more complex problem-solving later on. This worksheet provides essential practice to solidify their skills.

💡 How to Use This Worksheet

This worksheet is designed to challenge Year 1 pupils who have a strong understanding of subtraction within 20. It can be used as an extension activity after introducing the concept of subtraction or as a consolidation task to assess their understanding. Differentiation: For pupils who find the worksheet challenging, provide concrete resources such as counters or number lines to support their calculations. Encourage them to draw pictorial representations to visualise the problems. For pupils who complete the worksheet quickly and accurately, challenge them to create their own subtraction problems within 20. Common mistakes to watch out for include reversing the numbers in the subtraction (e.g., calculating 8 - 15 instead of 15 - 8) and miscounting when using concrete resources. Extension ideas include asking pupils to explain their reasoning for each answer or to create a number story to match each subtraction problem.

❓ Frequently Asked Questions