[IQ TOYS] Childrens Math Addition and Subtraction Math Stamp Rolling Arithmetic Tool Number

See Description. Features: Type: Number Teaching Interesting teaching, let children like learning more. Features: Rolling math questions appear instantly, easy to operate and very fast. It can develop kids logical calculation ability. Multifunction: Various algorithm questions, addition/subtraction adjustable flexibly, take your math scores next level. Premium: Two styles(addition, subtraction), repeated use. Made of pp material, small size and portable. Reusable: The stamp is clear and the marks are and it dries quickly. The package comes with stamp roller ink. Specification: Material: PPP. Size Chart: 5cmx7cm. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you. Please allow 1-2cm measuring deviation due to manual measurement. Package Include: Choose at Variant. 1 x Math Stamp with ink Ink Refill. Feedback: 1. Please leave 5 star feedback if you're satisfied with our products an