mental abacus (Q10419540)
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system where users mentally visualize an abacus to do calculations
- abacus system
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | mental abacus |
system where users mentally visualize an abacus to do calculations |
|
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Wikipedia(3 entries)
- enwiki Mental abacus
- ruwiki Система мысленных вычислений на абаке
- zhwiki 珠心算