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What is 10% of 42?

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10% of 42
4.2
10 ÷ 100 × 42 = 4.2

Common Percentages of 42

Percentage Result Page
1% 0.42 View →
5% 2.10 View →
10% 4.20 ← current
15% 6.30 View →
20% 8.40 View →
25% 10.50 View →
30% 12.60 View →
40% 16.80 View →
50% 21 View →
75% 31.50 View →
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Calculate a Different Percentage

% of
10% of 42 = 4.2

Nearby Percentages of 42

5% 2.10 6% 2.52 7% 2.94 8% 3.36 9% 3.78 10% 4.20 11% 4.62 12% 5.04 13% 5.46 14% 5.88 15% 6.30
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About This Percentage

You might be surprised — most people can't quickly calculate 10% of 42 in their head. 10% of 42 = 4.2. Here's the working: 42 × 0.1 = 4.2. Divide 42 by 10 to get 4.2. This exact percentage shows up when calculating 10% discounts, 10% tax rates, or 10% savings targets. A 10% change on 42 means an increase takes you to 46.20, while a decrease drops you to 37.80. Understanding percentages at a glance lets you spot a good deal, calculate a fair tip, or evaluate an investment return — all without a calculator.

Frequently Asked Questions

10% of 42 is 4.2. To calculate this, multiply 42 by 10 and divide by 100: 42 × 10 ÷ 100 = 4.2.
Convert the percentage to a decimal (10 ÷ 100 = 0.1), then multiply by 42: 0.1 × 42 = 4.2. This method works for any percentage calculation.
4.2 is 10% of 42. To verify: 4.2 ÷ 42 × 100 = 10%.
Here are some common percentages of 42: 10% = 4.2, 25% = 10.5, 50% = 21, 75% = 31.5.
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