Percentages Without A Calculator

A Maths Starter of The Day

  60 840 2220 20220
10%        
50%        
25%        
331/3%        
75%        
90%        

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Keywords: Starter | Mental Methods | Percentages

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Answers
 

 

 60 840 2220 20220
10% 6 84 222 2022
50% 30 420 1110 10110
25% 15 210 555 5055
331/3% 20 280 740 6740
75% 45 630 1665 15165
90% 54 756 1998 18198

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