Moodle Plugins directory: Variable numeric set with units: Stats | Moodle.org
Variable numeric set with units
Question types ::: qtype_varnumunit
Maintained by 
Tim Hunt, 
Mahmoud Kassaei, 
Anupama Sarjoshi
Part of set Open University.
This question type can have randomly selected numbers, and the student's answer must include the correct unit. Unit grading is done using the pmatch algorithm.