Simplifying Expressions

What Does "Simplify" Mean?

What Are "Like Terms"?

Method: Collecting Like Terms

Worked Example 1: Basic Simplification

Worked Example 2: Multiple Variables

Worked Example 3: With Powers

Common Mistakes to Avoid

What is Substitution?

Method: How to Substitute

Key Rules to Remember

Worked Example 4: Basic Substitution

Worked Example 5: With Powers

Worked Example 6: Negative Values (Tricky!)

Substitution: Common Mistakes to Avoid

Words to Algebra

Key Translations

Worked Example 7: Age Problem

Worked Example 8: Consecutive Numbers

Knowledge Organiser: Simplifying Expressions