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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 10" depending on place value. Each set is packaged in a re-sealable poly bag for handy storage. 10 each of 4 values” 0.001, 0.01, 0.1, and 1. 40 cards total.