Multiplication of 11 with any number of 2 digits. (You can’t use - TopicsExpress



          

Multiplication of 11 with any number of 2 digits. (You can’t use this rule for other numbers)Let me explain this rule by taking examples 35*11 = 3---(3+5)---5 = 385 Means insert the sum of first and second digits between the two digits of the number 27*11 = 2---(2+7)---7 = 297 Example. Here an extra case arises Consider the following examples for that 39*11 = 3+1---(3+9-10)---9 = 429 Means, if sum of two digits of the number is greater than 10, then add 1 to first digit and subtract 10 to the inserted term. 78*11 = 7+1---(7+8-10)---8 = 858
Posted on: Thu, 23 Jan 2014 07:14:02 +0000

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