Percentages Without A Calculator

A Maths Starter of The Day

  360 780 1680 63720
10%        
50%        
25%        
331/3%        
75%        
90%        

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Answers
 

 

 360 780 1680 63720
10% 36 78 168 6372
50% 180 390 840 31860
25% 90 195 420 15930
331/3% 120 260 560 21240
75% 270 585 1260 47790
90% 324 702 1512 57348

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