Increase student understanding of all the ways you can represent numbers with these fun dice featuring multiple representations of numbers from 1 to 20. Each die represents the number in Ten-Frame, tally marks, base ten, and numeral format. 4 dice each for 0-5, 5-10, 10-15, 15-20. Dice feature rounded corners for easy rolling. Dice measure 2” x 2” x 2”.