Multiplication of 11 with any number of 3 digits. (You cant use this rule for other numbers) Let me 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

Shashank , 11 Years ago

Grade Upto college level