Strategy question

Here's my question. A lot of these calculations take time to think of how to do them, and then more time to think of how to set up your answer on paper, and then more time to write down all the numbers and calculations. I've seen myself many times burn 20+ minutes on a 3 point LTD or medical claims cost calculation. A guy told me that it's smarter not to do any of the calculations. He said if you know how you would approach it, write down a few formulas and the 2 minute reader's digest version of the steps you would take to solve the problem. He said this will get you most of the points and save a heck of a lot of time. Is there any truth to this? Me being the OCD actuary who wants to nail the answer down to the 10th decimal place absolutely hates this strategy, but if it works at this point it's worth a try.

Strategy question