Addition on an abacus.jpg
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Addition on an abacus, addition on an abacus
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en
Addition on an abacus
commons
ja
そろばんの付け合わせ、そろばんの付け合わせ
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ja
そろばんの付け合わせ
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augend addition addend add sum up accretion calculatingly addable abacus arithmetic operation calculating plus