Students often fail to include units with their answers. Science teachers say that units are important. In which one of the following situations would you insist that units be included?
A) Your brother asks if you would like a large soda for lunch.
B) A friend offers you two per mile to help pay for gas on a trip.
C) Your manager says you can take a break when the project you are working on is halfway finished.
D) A police officer says you did not stop at a red light.

Question

Quizplus · Accepted Answer

Units are crucial in B ("A friend offers you two per mile to help pay for gas on a trip.") because it specifies a quantity (two) related to a distance (per mile), which directly involves measurement and requires units to make sense (e.g., two dollars per mile, two gallons per mile, etc.). This is a context where precision and clarity about what is being measured and quantified are necessary, which is why units are important.

Students Often Fail to Include Units with Their Answers