Advantage:
Addition and subtraction 2 styles, free to choose.
Roller design, combined adjustment.
Add stamp ink, reusable.
Give practice questions efficiently and quickly, without smudging or fading.
Rotate to adjust 10 different counting methods.
Small and exquisite, easy to carry.

Product Details:
material: plastic
Style: Addition/Subtraction

Shape:
Pink - Subtraction
Blue-Additional

Product Size:
4.4*3*4.8cm

Packing List:
X1 Addition and Subtraction Stamp Arithmetic Artifact (Includes Stamp Ink)