Doing mental math or mental arithmetic. Hand of person using abacus for calculating. Learning to use abacus on mental math courses

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Doing mental math or mental arithmetic. Hand of person using abacus for calculating. Learning to use abacus on mental math courses

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Size: 4172px × 2783px
Location: Uzbekistan
Photo credit: © Golib Golib Tolibov / Alamy / Afripics
License: Royalty Free
Model Released: No

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