What is 3% of 100?
Calculate Any Percentage
Step-by-Step Solution
- Write 3% as a decimal: 3 ÷ 100 = 0.03
- Multiply: 0.03 × 100 = 3
Formula: Percentage × Amount ÷ 100 = Result
How Percentages Work
The word "percent" means "per hundred." So 3% means 3 out of every 100. The formula is: Result = (Percentage / 100) × Amount. For 3% of 100: (3 / 100) × 100 = 3.
Real-World Examples
Shopping: a 3% discount on a $100 item saves you $3. Tips: 3% tip on a $100 bill is $3. Finance: 3% annual return on a $100 investment earns $3 per year. Tax: 3% tax rate on $100 income means $3 in taxes.
Mental Math Tip
To calculate 3% quickly: find 10% first (10), then adjust. 5% is half of 10%. 20% is double 10%. 1% is 10% divided by 10. Combine these building blocks for any percentage without a calculator.
Common Mistakes
Successive discounts do not add up. A 3% discount followed by another 3% discount is NOT 6% off. The second discount applies to the already-reduced price. Also, percentage increase and percentage points are different: going from 3% to 6% is a 3 percentage point increase but a 100% relative increase.