NUMBER TEACHING STAMP Addition and Subtraction, Fun Drawings, numbers 1-100. A fun and meaningful gift for your child or your friend's child! EFFICIENT AND FAST MATH QUESTIONS You can quickly prepare math questions for your kids at home. You can quickly complete the quiz simply by scrolling through the math questions. ROTATING ADJUSTABLE DESIGN 10 different queue modes can be adjusted. Satisfy all addition and subtraction numbers from 1-100. Develop children's logical calculation ability. TEACHING STAMP REUSABLE Small and exquisite, easy to carry, can add ink for reuse. The imprint is clear, and it dries and does not fade after printing. Product includes digital teaching stamp, 1 bottle of ink. SAVE TIME You can quickly prepare math problems for your kids at home. You can print quickly by just scrolling through the math problems, and it dries quickly. Primary school students make one page a day to improve the speed and accuracy of oral arithmetic, cute and practical. Specification: Name: Mathematics Teaching Roller Seal Color: random color Stamp size: 44x30x48mm Model: Addition, Subtraction Blot: 20x4mm Material: PVC Package: 1/2 pcs * stamp 1/2 pcs * ink Notice: 1.Please understand that color deviation may vary due to different monitor settings. 2.Due to manual measurement, there will be some errors, which are normal. Specification: Name: Mathematics Teaching Roller Seal Color: random color Stamp size: 44x30x48mm Model: Addition, Subtraction Blot: 20x4mm Material: PVC Package: 1/2 pcs * stamp 1/2 pcs * ink Notice: 1.Please understand that color deviation may vary due to different monitor settings. 2.Due to manual measurement, there will be some errors, which are normal.