A basic addition sum written on a blackboard.
A basic addition sum written on a blackboard.
Size: 3555px × 2370px
Photo credit: © sharpstock / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: add, adding, addition, basic, black, blackboard, board, calculation, chalk, childhood, class, correct, early, education, handwriting, learn, lesson, math, mathematics, maths, number, numbers, school, sign, simple, sum, teach, teaching, white, written