Not necessarily it depends on what subject the exam was in and as long as there isn't many you shouldn't get marked down.
marked down price marked down price
39/66=.5909. 59.09% of your errors are typos.
Eleftheros Typos was created in 1983.
No. The sentence is ambigious in it's meaning. Although the reader might assume that the teacher returned exams that did not have grades marked upon them, the teacher could have been returning exams to students who were themselves not marked with grades.
the story has too many typos
Typos is the lazy man's way of saying typing errors, or a typist's error.
It is an abbreviation of typing error
errata
Typos
The cast of Kitrinos typos - 1998 includes: Makis Triantafyllopoulos as Himself - Host
Produce photographs when they are not making typos
In alkaska, typos make you.