Basic calculation
Applied calculation
Applied economic calculation

7 8 9 4 5 6 1 2 3 0 . C + x / = close

First name:
Middle Name:
Last name:
E-mail:
My school:

Attention! The results will be sent to your e-mail address

I agree with the privacy policy of Noordhoff Uitgevers.


Round your answers to two decimal places!
Only use numbers!


If you don't follow these instructions, the system will calculate the wrong answers.