Roller Digital Teaching Stamp for Addition, Subtraction, Multiplication and Division 4pc, Premium Number Rolling Math Stamp for Kids, Teaching Math Practice Questions for Kindergarten, Homework

4pcs Math roller stamp for addition, subtraction, multipicationand division, Adjustable numbers, gently rolling, can efficiently and quickly print out math practice questions for kids. Early Educational Math Exercise: This digital teaching stamp roller is consisted of multiplication, additions, subtraction and division exercise. Gently rolling, it can print math problems efficiently and quickly which is convenient to assign homework to children. The package comes with 4 digital teaching stamp rollers and 4 ink which is sufficient to use.Random Math Exercise: This digital teaching stamp roller features random math exercise which is easy to roll print on the paper. Random exercise can develop children's logical calculation ability and integral math ability. The numbers are from 1-100 and exercise having addition, subtraction, multiplication or division.Clear Print: This digital teaching stamp roller comes with premium ink which is suitable for most paper and is fade resistant. It is suggested to print it on the back of discarded documents which saves paper and is eco-friendly. Children can do the exercise easily.Reusable Teaching Stamp: The digital teaching stamp roller is easy to refill the ink and a transparent storage box prevents ink from spilling. The ink can be refilled with 5-8 drops on the side of the roller stamp when it runs out of ink and wait a few minutes for the ink to absorb before continuing to use.Perfect Gift for Children: Parents can quickly prepare math problems for children at home and children can also prepare for each other and learn together. The digital teaching stamp roller is small and exquisite which the to carry and put in stationery box. It is a unique gift for children to improve math skills and improve concentration.Size (L*W*H): 8.3*8.3*4.3cm (1 piece)