JBlogX

Want to multiply 11 by 23? Just take the two digits 2 and 3, add them together (makes 5) and put that number in the middle - 253. What about 36 x 11? Again, split the 3 and the 6 and put their sum (9) in the middle - 396. Lovely - though take care, if the two digits add to more than 9, this nifty trick doesn't work so neatly. 58 x 11... well 5+8 = 13, but the answer isn't 5138, that "1" actually represents a 100, and needs to be added to the 5 to give the answer 638.

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