Percentages
 
    Work these out without a calculator or pen and paper!  
  1) 10% of 100 =  
  2) 1% of 50 =  
  3) 25% of 80 =  
  4) 75% of 16 =  
  5) 15% of 300 =  
 
    Do not use a calculator for these ones:  
  6) 10% of £46 = £  
  7) 20% of £52 = £  
  8) 5% of £560 = £  
  9) 60% of 200m = m  
  10) 70% of 700km = km  
 
    Use a calculator for these ones:  
  11) 17.5% of £348 = £  
  12) 23% of 99m = m  
  13) 87% of 23kg = kg  
  14) 3 1/4% of 16cm = cm  
  15) 66.66% of 270 (to 2 decimal places) =  
 
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Created by James Dawson, John Ruskin School 2002
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