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Percentages are used widely and in many different areas. For example, discounts in shops, bank interest rates, rates of inflation and many statistics in the media are expressed as percentages. Percentages are important for understanding the financial aspects of everyday life.

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  • December 10, 2022
  • 2
  • 2021/2022
  • Presentation
  • Unknown

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Percentages | Math | Broomfield School
Q&A Practice Quiz

A percentage is a way to show what percent of something there is. For example, 10%
means that there are 10 parts out of $80.




1. Calculate 10% of $80.

Let 10% of $80 = X

10/100 * £80 = X

Answer: X = $8




2. What is 40% of 120?

40% of 120

= (40/100) × 120

Answer = 48




3. If 16% of 40% of a number is 8, then find the number.

Let X be the required number.

Therefore, as per the given question,

(16/100) × (40/100) × X = 8

So, X = (8 × 100 × 100) / (16 × 40)

Answer = 125



4. What percentage of 2/7 is 1/35 ?

Let X% of 2/7 is 1/35.
∴ [(2/7) / 100] × X = 1/35

⇒ X = (1/35) × (7/2) × 100 Answer = 10%

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