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Grade: 12 

                        
Multiplication of 999 with any number (You can\t use this rule for other numbers) Let me explain this rule by taking examples 1. 51*999 = 51*(1000-1) = 51*1000-51 = 51000-51 = 50949. 2. 147*999 = 147*(1000-1) = 147000-147 = 146853
6 years ago

Answers : (1)

Nishant Vora
IIT Patna
askIITians Faculty
2467 Points 
							Dear student,

Thats a nice trick. sure you can use that!

Thanks
4 years ago
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