Numbers within the Numbers and Number System topic. It is designed to develop students’ fluency, reasoning, and problem-solving skills through a structured progression of activities. The worksheet covers fundamental operations involving positive and negative numbers, including addition, subtraction, multiplication, and division, alongside place value concepts such as expanded form and digit values. Students are encouraged to apply their understanding in real-life contexts through questions involving temperatures and bank balances. The resource is organised into five sections: Core Skills, Clarify, Justify, Challenge, and Generalise, allowing learners to move from basic procedural practice to deeper conceptual understanding and mathematical reasoning. Higher-order questions require students to explain rules involving negative numbers, justify their methods, identify patterns, and develop general mathematical rules. The worksheet is suitable for use as a classroom activity, independent practice task, homework assignment, revision exercise, or intervention resource for students studying IGCSE or GCSE Mathematics. It also provides opportunities for teachers and tutors to assess both procedural competence and conceptual understanding of directed numbers. Based on the uploaded resource, the material is particularly appropriate for students working towards Foundation GCSE.