Quick Percentage Calculation Tricks
Calculating percentages mentally can save time. Here are some proven tricks.
Basic Percentage Formula
Percentage = (Part ÷ Whole) × 100
Use our Percentage Calculator for complex calculations.
Quick Mental Math Tricks
Finding 10%
Simply move the decimal one place left:
- 10% of 450 = 45
- 10% of 1200 = 120
Finding 5%
Half of 10%:
- 5% of 450 = 22.5
Finding 15%
Add 10% + 5%:
- 15% of 450 = 45 + 22.5 = 67.5
Finding 25%
Divide by 4:
- 25% of 400 = 100
Discount Calculation
Finding Discounted Price
Sale Price = Original Price × (1 - Discount%/100)
Example: 30% off on ₹2,000
- Discount = 2000 × 0.30 = ₹600
- Sale Price = ₹1,400
Use our Discount Calculator
Marks Percentage
Percentage = (Marks Obtained ÷ Total Marks) × 100
If you scored 420 out of 500:
- Percentage = (420/500) × 100 = 84%
Use our Grade Calculator
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Tags
#Percentage#Math#Discount#Tricks
