Roller printer creates addition and subtraction calculations, simple calculation generator – NOS

Product Description:
– – – Product name: Roller printer creates addition and subtraction for children
– – Can adjust 100 random calculations
– Color: Green, Pink

Product function:
– – Unique technology, easy to rotate the shaft to change calculations
– – Deliver summer lessons to your child simply and conveniently
– – Children can give themselves exercises: create excitement to learn every day
– – Suitable as a gift for childrenHello! Glad to welcome you to the shop
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