🏠 Curriculum Home 🌱 Grade 1 🌿 Grade 2 🚀 Grade 3 🌟 Grade 4 🌟 Grade 5 💻 Grade 7 📐 Grade 9 📐 Mathematics 💻 Computer Science 📄 Worksheets (650) Home › Grade 9 › Mathematics 📐 Grade 9 Mathematics Numbers, algebra, geometry, data analysis, and problem-solving. Grade 9 — Chapter 1: Number Systems & Real Numbers 1.1 Rational vs. Irrational Numbers & Decimal Expansions