- AMI approved
- Unequalled beauty
- Precise control of error
- Exact isolation of one quality
- Perfect interrelations
Problem Slips: Subtraction Working Charts
2 sets of color-coded unit subtraction combinations (equations) slips. 1 set of combinations for each of the 2 Subtraction Working Charts. Each set supplied in a separate plastic box.
|Minimum age||6 years|
Create your Nienhuis account
Join the Nienhuis community and create your Nienhuis account. With an account you have access to all your orders and personal details.
> Create account
Request a catalog
Do you want to receive our brand new catalog? Request your digital or hard copy catalog here!
> Request catalog
Get in touch
Do you have any questions? Get in touch with us, we’ll be happy to talk to you. Leave us a message here and we will get right back to you!
> Contact us