What is 10% of $30?
Learn how to calculate 10% of $30 with our step-by-step guide and real-world US examples
Quick Answer
10% of $30 equals $3. To calculate this, we convert the percentage to a decimal (10 ÷ 100 = 0.1000) and multiply it by $30.
Visual Representation
The chart shows how $3 relates to the total $$30
Step-by-Step Calculation
- 1Convert the percentage to a decimal by dividing by 100: 10 ÷ 100 = 0.1000
- 2Multiply the decimal by the number: 0.1000 × 30 = 3.00
- 3Therefore, 10% of 30 is 3.00
Real-Life Examples
Shopping & Discounts: If a $30 item has a 10% discount, you save $3.00, paying $27.00.
Black Friday Sale: During Black Friday, a $30 product with 10% off costs $27.00 instead.
Tax Calculation: A 10% sales tax on $30 adds $3.00 to your bill, totaling $33.00.
Restaurant Tips: A 10% tip on a $30 bill is $3.00.
Understanding the Formula
The general formula for calculating what a percentage of a dollar amount equals is:
In this case, we're calculating 10% of $30:
- First, divide the percentage by 100: 10 ÷ 100 = 0.1000
- Then, multiply by the amount: 0.1000 × $30 = $3
This formula works for any percentage calculation. You can use our calculator above to try different values.
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