The hands-on way to visualize numbers and operations! These easy-to-manipulate discs provide hands-on practice for developing number sense. Color-coded according to place value, the foam discs allow students to visually track what happens when they regroup numbers in both addition and subtraction. And they help illustrate that multiplication is the same as repeated addition, and division the same as repeated subtraction. 25 each of 10 values - 0.001, 0.01, 0.1, 1, 10, 100, 1,000, 10,000, 100,000, 1,000,000. 25 each thousandth, hundredth, tenth, one, ten, hundred, thousand, ten thousand, hundred thousand, million. Details:Multicolored1" discs250 discs per packageMade from EVA foamResealable poly bagRecommended for ages 6-12 yearsAligned to Eureka Math Year-Long Materials Lists Grades 2, 3,4,5 & 6