Yes you can ask your instructor but if you've had a flying lesson (not an introductory flight) you should'nt have to. As part of the de-brief your instructor should verify the times of the flight together with the topics covered. The times in your log book and the times in the airplane tech log should match and the remarks in mine are similar to the ones in my student record.
If your instructor is rushing off at the end of your lesson without talking to you about it I'd look for another flying school or instructor.