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| Best abacus to buy |
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Posted by: sachiek - 12-28-2021, 10:40 AM - Forum: Grade 9 - 12
- Replies (3)
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Just for fun, I was thinking of buying an abacus. Dhould I get a 4:1 abacus or 5:2 abacus? Any abacus geeks here able to weigh in?
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