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 Re: Mental arithmetic Andrea Simonassi18-Aug-20 2:27 Andrea Simonassi 18-Aug-20 2:27
 Re: Mental arithmetic arndibble18-Aug-20 2:34 arndibble 18-Aug-20 2:34
 Re: Mental arithmetic John Godin18-Aug-20 2:57 John Godin 18-Aug-20 2:57
 Re: Mental arithmetic avanishrayankula18-Aug-20 5:01 avanishrayankula 18-Aug-20 5:01
 Re: Mental arithmetic Member 1146760818-Aug-20 6:04 Member 11467608 18-Aug-20 6:04
 Re: Mental arithmetic jsrjsr18-Aug-20 16:26 jsrjsr 18-Aug-20 16:26
 Brute force. All in head, no paper or anything else. Wrote the post after doing it. 10x10 = 100 11x10 = 110+11 = 121 (don't remember this one) 12x12 = 144 subtotal = 365 13x10 = 130+39 = 169 (don't remember this one) 14x10 = 140+56 = 196 (don't remember this one) subtotal = 365 total = 730 divide by 365 = 2 Add one more pair of numbers and I might not have been able to do it. I dropped the 169 on the floor once before adding the second pair. I never learned the complete multiplication tables as I could do the above sort of math quickly enough to get by.
 Re: Mental arithmetic Member 1477127419-Aug-20 5:36 Member 14771274 19-Aug-20 5:36
 Re: Mental arithmetic Stan Rydz19-Aug-20 8:04 Stan Rydz 19-Aug-20 8:04
 Re: Mental arithmetic MrChug19-Aug-20 16:47 MrChug 19-Aug-20 16:47
 Re: Mental arithmetic Kurosh F.30-Aug-20 5:30 Kurosh F. 30-Aug-20 5:30
 Re: Mental arithmetic Member 85731432-Sep-20 20:35 Member 8573143 2-Sep-20 20:35
 Thought of the Day OriginalGriff17-Aug-20 4:31 OriginalGriff 17-Aug-20 4:31
 Re: Thought of the Day W∴ Balboos, GHB17-Aug-20 5:10 W∴ Balboos, GHB 17-Aug-20 5:10
 Re: Thought of the Day Daniel Pfeffer17-Aug-20 5:53 Daniel Pfeffer 17-Aug-20 5:53
 Re: Thought of the Day jsc4217-Aug-20 6:58 jsc42 17-Aug-20 6:58
 Re: Thought of the Day Mike Hankey17-Aug-20 6:47 Mike Hankey 17-Aug-20 6:47
 Re: Thought of the Day Rick York17-Aug-20 7:14 Rick York 17-Aug-20 7:14
 Re: Thought of the Day jeron117-Aug-20 7:26 jeron1 17-Aug-20 7:26
 Re: Thought of the Day DRHuff17-Aug-20 9:20 DRHuff 17-Aug-20 9:20
 Bluetooth blues on Windows 10 - SOLVED? Joan M17-Aug-20 4:01 Joan M 17-Aug-20 4:01
 Just came back from the eye doctor... Sander Rossel17-Aug-20 1:34 Sander Rossel 17-Aug-20 1:34
 CCC - 2020-08-17 musefan16-Aug-20 22:05 musefan 16-Aug-20 22:05
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