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I always found 9 to be easy because whatever you multiply with (2-10) you just had to remove 1 from that number, and maybe memorise the second digit. e.g. 9*3
by wingerlang 11y ago
I always found 9 to be easy because whatever you multiply with (2-10) you just had to remove 1 from that number, and maybe memorise the second digit.
e.g.
9*3 = 3-1 = 2 (+ the 7 that I just memorised)
But actually the finger trick is amazing, and I just used it to double check the numbers as it was a loooong time I did it.
- kayge 11y agoThe "remove 1" trick is sort of how I learned it, except instead of memorizing "2 goes with 7" I learned that the 2 digits should add back up to 9: 9*3 = 27 (3-1 = 2,7 = 9-2) 9*4 = 36 (4-1 = 3,6 = 9-3) ... 9*9 = 81 (9-1 = 8,1 = 9-8) Fun stuff :)