[Mathematical exercise rolling stamp] You will receive 2 mathematical exercise rolling stamps, and fill in the blank with addition and subtraction within 100. This is an interesting and meaningful gift for your children or friends children!
[Reusable] There are 2 bottles of ink on the stamps of primary school teachers. You can add ink for reuse. The color will not fade after drying, and it is not easy to get dirty.
[Easy to carry] The size of the mathematical cylinder stamp is 1.7 x 1.2 x 1.89 inches, which is small and delicate and easy to carry. It can be put in the stationery bag or pocket at any time.
[Rotation design] There are 10 different queue modes in the mathematical exercise chapter, which can be adjusted. By gently scrolling, you can print less than 100 math problems efficiently and quickly. Cultivate childrens logical calculation ability.
[Efficient and fast] You can quickly prepare math problems for children at home. Just scroll through the math game and you can quickly complete the test.

color:As shown
Material:plastic

Package Contents:
2 x stamp
2 x ink