explain this rule by taking examples
1. 352*11 = 3---(3+5)---(5+2)---2 = 3872
Means insert the sum of first and second digits, then sum of second and third digits between the two terminal digits of the number
2. 213*11 = 2---(2+1)---(1+3)---3 = 2343
if sum of two digits of the number is greater than 10, then add 1 to previous digit and subtract 10 to the associated digit.
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EX:-
1) 329*11 = 3--- (3+2) +1--- (2+9-10) ---9 = 3619
2) 758*11 = 7+1---(7+5-10)+1---(5+8-10)---8 = 8338
1. 352*11 = 3---(3+5)---(5+2)---2 = 3872
Means insert the sum of first and second digits, then sum of second and third digits between the two terminal digits of the number
2. 213*11 = 2---(2+1)---(1+3)---3 = 2343
if sum of two digits of the number is greater than 10, then add 1 to previous digit and subtract 10 to the associated digit.
..............................................................................
EX:-
1) 329*11 = 3--- (3+2) +1--- (2+9-10) ---9 = 3619
2) 758*11 = 7+1---(7+5-10)+1---(5+8-10)---8 = 8338
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