Subtraction Equations And Differences Box This is a two-compartment box with lid, which contains a set of equations and a set of answers. All the equations and differences for the subtraction combinations 1 - 18 included. The box and the chips are made from wood. • Dimensions of the box: 7.5 x 4 x 2 inches • Recommended Ages: 4 years and up Buy now: https://kidadvance.com/subtraction-equations-and-differences-box.html