Anchor Method: Nearest 'easy' percentage se start karo. 37% of 400: 40% = 160, minus 3% = 12, answer = 148. Koi bhi % ko 10%, 5%, 1% chunks mein todo.
Percentage Calculation Shortcuts
SSCBankingCATUPSC CSATClass 8
Yaad Karne ki List
- 10% = ÷10
- 5% = half of 10%
- 1% = ÷100
- 25% = ÷4
- 33.33% = ÷3
- 50% = ÷2
- 12.5% = ÷8
- Successive discounts: Net = a + b - ab/100
- % increase then decrease: Net = -change²/100
Mnemonic Tricks
Kaise Map Hota Hai
| Cue | Maps To |
|---|---|
| 10% = decimal ek jagah left | Kisi bhi number ka 10% |
| 5% = 10% ka aadha | 10% value ka half |
| 37% = 40% - 3% | Anchor + adjust |
Yeh Fast Kyun Hai
Dimag turant halve aur decimal shift kar sakta hai. 10%/50%/25% se anchor karke, koi bhi % simple addition/subtraction ban jaata hai.
Aksar Poochhe Jaane Wale Sawaal
Exam mein percentage jaldi kaise calculate karein?
Anchor Method: 10% nikalo (÷10), phir build karo. 35% = 3×10% + 5%. Practice se speed build hoti hai.
Successive discount formula kya hai?
a% aur b% ki do discounts = a + b - (ab/100). Example: 20% phir 30% = 20+30-6 = 44% net discount.
Same % increase aur decrease karne pe kya hota hai?
Hamesha NET LOSS. Formula: -x²/100. Example: +10% phir -10% = -1% net loss.
Kya percentage shortcuts Banking exams mein useful hain?
Essential. SSC aur Banking mein 5-8 questions percentage pe. Shortcuts total 2-3 minutes save karte hain.