Rotate and adjust column types, you can adjust 10 different queue sides. , you can quickly prepare math problems for your child at home. You can quickly complete the quiz simply by scrolling through the math questions.

Addition and subtraction 2 model: free choice, 10 different queue modes can be adjusted to meet all addition and subtraction numbers from 1-100. Develop children's logical calculation ability. Easy to carry: This addition and subtraction math stamp is small and exquisite, it can be reused many times by adding ink, the stamp is clear, and it will not fade after drying