kid, learn, count, arithmetic, child, homework, school, preschool, math, boy, elementary, student, addition, subtraction, exercise, numbers, test, abacus, baby, calculation, caucasian, copy space, decision, difficulties, education, exam, example, grade, home, homeschooling, indoors, knowledge, lesson, logic, mathematics, prepare, problems, remember, remote, schoolboy, simple, skill, solve, study, task, textbook, think, workbook, write