Mathematics Review: Key Concepts for LET

Core Mathematics Topics

Algebra

• Variables and expressions
• Equations and inequalities
• Polynomials
• Linear and quadratic functions

Geometry

• Points, lines, angles
• Triangles and their properties
• Area and Perimeter
• Circles

Statistics and Probability

• Mean, median, mode
• Range and standard deviation
• Basic probability concepts

Essential Formulas

• Quadratic Formula: x = (-b ± √(b²-4ac)) / 2a
• Area of Circle: A = πr²
• Pythagorean Theorem: a² + b² = c²
• Simple Interest: I = Prt

Problem-Solving Strategies

1. Understand the Problem - Read carefully, identify what is given and what is asked.
2. Plan Your Approach - Choose the right formula, break into steps.
3. Solve and Check - Work systematically, verify your answer.

Common Mistakes to Avoid

• Calculation errors
• Misreading problems
• Using wrong formulas
• Not checking answers