Erashok: Let me explain this rule by taking examples To calculate 56×54: Multiply 5 by 5+1. So, 5*6 = 30. Write down 30. Multiply together the last digits: 6*4 = 24. Write down 24. The product of 56 and 54 is thus 3024.

Sunday 23 November 2014

Let me explain this rule by taking examples To calculate 56×54: Multiply 5 by 5+1. So, 56 = 30. Write down 30. Multiply together the last digits: 64 = 24. Write down 24. The product of 56 and 54 is thus 3024.

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