One plus one equals two, simple mathematics calculation on green chalkboard

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Size: 4794px × 3197px
Photo credit: © Igor Stevanovic / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 1, 2, addition, answer, arithmetic, basic, board, calculate, calculation, chalkboard, class, classroom, correct, easy, education, elementary, equals, green, learn, learning, lecture, lesson, math, mathematical, mathematics, number, school, schooling, simple, simplicity, sum, teaching