this post was submitted on 26 Sep 2023
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@ScottSoCal @masukomi @youronlyone @nellie_m @autistics @actuallyautistic @actuallyadhd @autism @pathfinder fun trick, the lower times tables for 9 have products that would total 9 if the digits were added together and the first digit is the multiplier minus 1
9x1=09 (1-1=0, 9-0=9, 0+9=9)
9x2=18 (2-1=1, 9-1=8, 1+8=9)
9x3=27 (3-1=2, 9-2=7, 2+7=9)
This works up through 10!
Memorization was the bane of my life as a gestalt style learner 😅
@Waiting4Thunder @ScottSoCal @masukomi @youronlyone @nellie_m @autistics @actuallyautistic @actuallyadhd @autism @pathfinder you can do the nine times table on your hands. Hold up ten fingers. Put down the one on the left. You have 9. Put that one up, and the next down. You have 1, 8. Move the finger along, 2, 7, then 3,6 and so on.
To get for instance 9 x 7 put down the finger 7 from the left, and you have 6 fingers on the left and 3 on the right!
@Waiting4Thunder
I never noticed that before - that's actually kind of cool.
The addition part is also true for 9x12=108.
@masukomi @youronlyone @nellie_m @autistics @actuallyautistic @actuallyadhd @autism @pathfinder