Still, manually writing addition and subtraction questions for your child? “Addition And Subtraction Seal Arithmetic Artifact” roll gently and the math problems appear immediately. Cute and practical, buy now!

Advantages:

• Addition and subtraction 2 styles, free to choose.
• Roller design, combined adjustment.
• Add seal ink, which can be used repeatedly.
• Efficient and fast give practice questions, no smudge, no fading.
• Rotate to adjust 10 different count methods.
• Small and exquisite, easy to carry.

Specification:

• Weight: 120g
• Material: Plastic
• Style: Addition/Subtraction
• Size: 4.4*3*4.8cm/1.7*1.2*1.9in
• Package Contents: 1x Addition And Subtraction Seal Arithmetic Artifact (Contains seal ink)

Warm Tip:

• Dear buyer, due to the lighting effect, monitor's brightness, manual measurement, etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!