These color-coded cards provide students with a visual representation of place value and help them develop number sense. (Color-coding matches Sensational Math Place Value Discs) The cards are all 4" high and range in length from 2.5" to 17.5" depending on place value. Each set is packaged in a re-sealable poly bag for handy storage. 10 each of 10 values 0.001, 0.01, 0.1, 1, 10, 100, 1,000, 10,000, 100,000, and 1,000,000. 100 cards total.