Skill: Identify the value of a digit

A digit’s value in a multi-digit whole number is determined by its place—the number of groups of ten it represents—not by the digit alone; the same digit can represent ones, tens, hundreds, or higher powers of ten, while zero may hold a place without contributing a quantity. Interpreting standard, expanded, and place-value representations supports comparing, rounding, and computing with whole numbers; decimal place value, other bases, and arbitrarily large or generalized numbers are outside this scope.