5th Grade Mathematics - Exam Revision Sheet

1. 📌 Essentials

• The course covers key concepts: quantities, change, geometry, and data.
• Interest simple ($I = P \times r \times t$) and compound formulas.
• Fractions involve operations: add, subtract,, divide.
• Linear systems solve for two variables via substitution/elimination.
• Geometric progression: $a_n = a_1 \times r^{n-1}$.
• Notable angles: 30°, 45°, 60°, 90°.
• Trigonometric ratios: sine, cosine, tangent relate sides in right triangles.
• Angles of elevation/depression measure line-of-sight angles.
• Measures of central tendency: mean, median, mode.
• Probability: ratio of favorable outcomes to total.

2. 🧩 Key Structures & Components

• Interest — calculates growth of money over time.
• Fractions — parts of a whole, used in ratios and proportions.
• Linear equations — algebraic expressions in standard form.
• Sequences (PG) — ordered list with a common ratio.
• Angles — measured in degrees, used in geometry and trigonometry.
• Trigonometric ratios — relate side lengths in right triangles.
• Data measures — summarize data with mean, median, mode.
• Probability — chance of an event occurring.

3. 🔬 Functions, Mechanisms & Relationships