Percent of a number

Lessons

• Introduction
  a)

  • What is a percent?
  • How to find the percent of a number?
  
  

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• 1.
  Evaluate without using a calculator. Then, check your answers with a calculator.
  a)

  15% of 40
  
  
  b)

  320% of 600
  
  
  c)

  17.5% of 20
  
  
  d)

  $20\frac{1}{4}$% of 50
  
  

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• 2.
  The total rain precipitation of last summer was 350 mm. If it increased by $12\frac{1}{2}$% this summer, what was the rain precipitation this summer?

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