Vocabulary *digits - a number that can be combined with others to create larger numbers *place - a location or position of a digit *value - the value (worth) of the digit *ones - any digit from 0-9 *tens - any digits from 10-99 *hundreds - any digits from 100-999 *units - represents the ones in a model *tower/rods - represents the tens in a model *flats - represents the hundreds in a model