A basic addition sum written on a blackboard.
Contributor: Sharpshot
ID : 12775818
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Keywords
sum, summing, addition, adding, blackboard, chalk, education, plus, signs, basic, black, board, calculation, childhood, class, early, handwriting, information, learn, lesson, mathematic, mathematic, number, preschool, school, simple, instructing, teacher, white, writtenRelated items
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