Class 5 Math: Be My Multiple I'll Be Your Factor 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 5 Be My Multiple I'll Be Your Factor to help you refresh your memory instantly.

Core Topics At a Glance

### 📌 Multiples and Factors Factors divide a number completely. Multiples are products of a number and integers.

### 📌 Common multiples and HCF Common multiples are numbers shared in the multiples lists of two values. HCF is the largest common divisor of two numbers.

### 📌 LCM (Least Common Multiple) puzzles Solving real-life puzzles (like traffic lights flashing, or bells tolling together) by finding the Least Common Multiple (LCM) of their intervals.

### 📌 Prime and Composite numbers Prime numbers have exactly two factors: 1 and the number itself. Composite numbers have more than two factors.

### 📌 Factor trees A factor tree is a diagram used to find the prime factorization of a number by splitting it into factor branches until only primes remain.

Key Formulas Mind Map

• LCM HCF Relation: `a \times b = \text{LCM}(a,b) \times \text{HCF}(a,b)` - Product of two numbers is equal to product of their LCM and HCF....

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.