Class 6 Math: Whole Numbers Quick Revision Chapter Summary

Need to review the entire chapter before a test? This quick revision guide summarizes all the core concepts, topics, and equations taught in Class 6 Whole Numbers to help you refresh your memory instantly.

Core Topics At a Glance

### 📌 Natural numbers vs Whole numbers Natural numbers are the positive counting numbers starting from 1. Whole numbers include all natural numbers and zero.

### 📌 Predecessor and Successor The predecessor of a whole number is the number that comes immediately before it (number minus 1). The successor is the number that comes immediately after it (number plus 1).

### 📌 The Number Line A horizontal line where numbers are marked as points at equal intervals. Moving right represents addition, and moving left represents subtraction.

### 📌 Properties of whole numbers (Closure, Commutative, Associative, Distributive) Whole numbers are closed under addition and multiplication. They are commutative and associative for these operations. Multiplication distributes over addition.

Key Formulas Mind Map

• Distributive Property: `a(b + c) = ab + ac` - Distributes multiplication over addition....
• Successor Function: `S(n) = n + 1` - Returns the next whole number....

Revision Checklist

1. Review the subtopic guides and outline notes.
2. Practice writing the key formulas from memory.
3. Solve at least 3 worked examples and check your steps.
4. Take a timed practice quiz to verify your speed.