These color-coded cards provide students with a visual representation of place value and help them develop number sense. You can use these cards to visually show expanded form of numbers by place value, greater than, less than, addition and subtraction without regrouping, multiplying numbers, and more. The cards are all 4" high and range in length from 2 1/2" to 17 1/2", depending on place value. Includes 10 each of 7 values: Ones, Tens, Hundreds, Thousands, Ten Thousands, Hundred Thousands, Millions. 70 total cards.