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| visits | member for | 10 months |
| seen | Jul 3 '12 at 14:54 | |
| stats | profile views | 2 |
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Jul 3 |
comment |
What research has modelled the difficulty of mental mathematical calculation? @JeromyAnglim no, not really, no particular limit. Though generally, mental techniques to do anything else break down to addition, subtraction, multiplication of digits and decimal shifts. |
