numeration

acquirement add adding addition arithmetic arithmetical arithmetically arithmetician attainment babyish believe blunder blunders calculate calculation calculi child childish computation computational computationally computations count counting education educational educationally educationist erring error failure failures fallacy fallibility fault faulted fun game gaming hesitate incorrect instruct issue kid kiddie kiddish kindergarten learn math mathematics maths miscount miscue mistake mistaken mistakenly mistakes monkeying nonevent number numbered numbering numbers numeration play playing plaything problem scholar scholarship school shortcoming study summable think totalling toy toyshop underachievement