Converting among decimals, fractions, and percents

Lessons

• Introduction
  a)

  • what is a fraction?
  • convert fractions to decimals
  • convert decimals to fractions
  
  

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• 1.
  Fill in the blank below.
  
  a)

  $\frac{3}{10}=\frac{ \Box }{100}=$____%
  
  
  b)

  $\frac{1}{4}=\frac{ \Box }{100}=$____%
  
  
  c)

  $\frac{7}{5}=\frac{ \Box }{100}=$____%
  
  

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• 2.
  Fill in the blank with the inequality >, < or = to make the statement true.
  
  a)

  10%___0.3
  
  
  b)

  $\frac{9}{8}$___100%
  
  
  c)

  4.5___$\frac{6}{10}$
  
  

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• 3.
  There are 20 people in the room below. What percent of people are the following colours?
  
  
  a)

  Red
  
  
  b)

  Orange
  
  
  c)

  Blue
  
  

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• 4.
  The table shows the number of boys and girls in a school who play soccer.
  

  	Play soccer	Total population
  Girls	64	510
  Boys	128	500
  Total	192	1010

  
  
  a)

  Estimate the percent of girls who play soccer. Then, calculate the percent using a calculator and round to the nearest tenth.
  
  
  b)

  Estimate the percent of boys who play soccer. Then, calculate the percent using a calculator and round to the nearest tenth.
  
  
  c)

  Estima el porcentaje de niños en la escuela que juegan futbol soccer. Después, calcula el porcentaje usando una calculadora y redondea al décimo más cercano.
  
  

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