Bullet Points: 1. [Math Teaching stamp] Multiplication and division, interesting pictures, numbers 1-100. A fun and meaningful gift for your child or a friend's child! 2. [Efficient and fast math questions] You can quickly prepare math questions for your children at home. You can quickly complete the quiz simply by scrolling through the math questions. 3. [Rotation adjustable design] 10 different queue modes can be adjusted. Satisfy all addition and subtraction numbers from 1-100. Develop children's logical calculation ability. 4. [Reusable teaching stamp] Small and exquisite, easy to carry, can be re-used with ink. The imprint is clear and does not fade after drying. The product includes a math teaching stamp and 1 bottle of ink. 5. [Saving time] You can quickly prepare math questions for your kids at home. You can print quickly just by scrolling through the math questions, and it dries up quickly. Elementary school students do one page a day to improve the speed and accuracy of oral arithmetic, which is cute and practical.