- Adjustable numbers for printing math practice questions within 100 - Efficient and quick printing process - Fun and meaningful gift for children and friends' children - Improve the Efficiency of Learning: - Quickly prepare math problems at home - Simply roll the stamp for quick printing - Dries quickly for convenience - Arrangement changed every 10 problems to avoid duplication - Mathematics Skill Development: - Rotate and adjust columns for 10 different queuing methods - Covers addition and subtraction numbers from 1-100 - Cultivates children's logical calculation ability - Can be Used Repeatedly: - Small, exquisite, and easy to carry - Reusable after adding ink - Clear imprint with non-fading color - Ink refillable for repeated use Perfect Educational Gifts for Kids - Great for parents to prepare math problems quickly - Encourages children to practice and learn together
