Apparently, nines are the hardest to grasp for primary school children. If only they’d learned how to cheat like me, says Adrian Chiles

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[–] 3 points 3 months ago* (1 child)

9s have always been easy for me. Subtract 1 from the other number to get the first digit of the answer, the second digit is whatever digit you would add to the first to make 9.

For 9x6
6-1=5
5+4=9
So the answer is 54.

It happens so fast in my head that I barely even have to think about it.

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