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How to Find Percentage of a Number

Learn how to find percentages of numbers, with examples like 30% of 200. Let's get started! 🚀

How to Find Percentage of a Number - introduction visual

Video Lesson

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Flashcards

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Example of finding 30% of 200 using the formula base value × percentage rate = percentage value, result is 60.Finding 60% of 150 kg equals 90 kg and 25% of 120 cm equals 30 cm using the formula base value × percentage rate = percentage value.Calculating a 20% tip on a $180 bill, resulting in a $36 tip and a total payment of $216.Quick trick for finding percentage of a number and using it to calculate a 12% discount on a $1500 laptop.

🛎️ The Percentage Formula

  • Percentage of a number = original number × percentage
  • Example: 30% of 200 = 200 × 0.3 = 60

🛎️ Finding a Percentage of an Amount

  • Turn the percentage into a decimal or fraction, whichever is easier
  • Example: 60% of 150 kg = 150 × 0.6 = 90 kg

🛎️ Using Percentages in Real Life

  • First, find the percentage value (e.g. 20% of £180 = £36)
  • Then add it for a tip or tax, or subtract it for a discount

🛎️ Percentage Tricks (10% and 1%)

  • 10% of a number: move the decimal one place left
  • 1% of a number: move the decimal two places left

Practice Questions

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Interactive Activity

Visualize percentages as parts of a whole

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