Factors and Multiples — Lesson
🌟 Let's Discover Factors and Multiples! 🌟
Imagine you have 12 ladoos 🍬 to share with your friends at a party. You want to share them equally without breaking any ladoo. How many friends can you invite so that everyone gets the same number of ladoos?
Let's find out by learning about Factors and Multiples!
🔍 Core Concepts: What Are Factors and Multiples?
Factors are numbers that divide another number exactly without leaving any remainder.
For example, factors of 12 are numbers that divide 12 exactly.
| Number | Factors |
|---|---|
| 12 | 1, 2, 3, 4, 6, 12 |
| 10 | 1, 2, 5, 10 |
Multiples are numbers you get when you multiply a number by 1, 2, 3, and so on.
For example, multiples of 4 are 4, 8, 12, 16, 20, ...
| Number | Multiples |
|---|---|
| 3 | 3, 6, 9, 12, 15, 18, ... |
| 5 | 5, 10, 15, 20, 25, 30, ... |
📌 Remember:
• A factor divides the number exactly.
• A multiple is the result of multiplying the number.
📦 Key Formulas / Rules
- Factor Rule: If a divides b exactly, then a is a factor of b.
- Multiple Rule: If b = a × n (where n is a whole number), then b is a multiple of a.
- Every number has 1 and itself as factors.
- 0 is a multiple of every number.
🤩 Did You Know?
The number 1 is a special factor! It is a factor of every number in the world. And guess what? In India, the number 108 is considered very lucky and sacred. It has many factors — 108 can be divided by 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108! So, 108 is a very "friendly" number with many factors! 🎉
📝 Exam Tips: How to Score Well!
- Check division carefully: To find factors, divide the number and see if remainder is zero.
- List multiples step-by-step: Multiply the number by 1, 2, 3... to avoid mistakes.
- Don't forget 1 and the number itself: These are always factors!
- Watch out for tricky questions: Sometimes they ask for common factors or common multiples of two numbers.
- Practice with Indian examples: Like sharing sweets or arranging rangoli patterns in rows and columns.
Factors and Multiples — Mcq
Factors and Multiples — Mnemonic
🎉 Fun Mnemonics for Factors & Multiples 🎉
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1. FACTOR FRIENDS 🤝
“F-A-C-T-O-R” helps you remember what factors do:
Fits perfectly, no left over!
All divide the number.
Can’t be bigger than the number.
They make the number when multiplied.
Only whole numbers allowed!
Right partners in multiplication!👉 So, factors are the perfect partners that fit exactly into a number!
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2. MULTIPLES MELA 🎪
“M-U-L-T-I-P-L-E” reminds you what multiples mean:
Many jumps of the number
Up and up, counting fast!
Long list of numbers
Times table magic!
Infinite numbers come along
Play with 2, 3, 4 and more!
Like 5, 10, 15, 20...
Every multiple grows bigger!👉 Multiples are the counting jumps you make when you multiply!
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3. Hindi Rhyming Trick 🇮🇳
“गुणा करो, भाग करो, फैक्टर और मल्टीपल समझो!”
गुणा करो (Multiply) = Multiples बनाओ (Make multiples)
भाग करो (Divide) = Factors खोजो (Find factors)👉 याद रखो: गुणा से बने मल्टीपल्स, भाग से मिले फैक्टर्स!
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