Yes absolutely. Idk what materials you have, but the Kaplan physics and math book (the most valuable book in the series IMO) goes over this in detail. I am also sure there are tons of methods doing this online
For the math, you should be strategically rounding all of the numbers during calculations. So you glance at the answers and look at how similar the answers are. if the answers are wildly different, you can round super heavily during calculations. For example, I see the answers are 8.533, 102.098, 1233.766, and 0.555, I can round the numbers they give me tremendously and just go with the closest answer. IE the question asks 192.776x6.390, I can just do 200*6 = 1200, and bam. Obviously it will be notably more complicated, but this just demonstrates this method's efficacy in saving time.
There are tons more strategies they teach in that Kaplan phys and math book so check it out. It's the last few chapters in the book. You can definitely find these books online for free if you don't have them/ want to pay for them. I used a website that had them all on there, but I have lost that to time, unfortunately.
Finally, after making sure to incorporate those strategies, the answer is to do a f@ckload of practice problems. You just start getting a gut feeling for what the answer should be. I wish I could still do mental math as I could do on the MCAT. I took stats the semester after taking it and could literally do the problems in my head bc it was multiple choice.
Edit:
last thing. I had trouble with doing this, but you also need to get good at identifying questions that will simply just take you too much time to be worth doing on a first pass, flagging them, and skipping them. This was really tough for me lol, but you gotta do it. Chances are if you think its too hard, so will the other test takers, and they will either waste time doing it and miss out on easy Q's or just get the question wrong. Remember, you don't need to outrun the bear (MCAT), you just need to outrun your friend (the other test-takers).
Feel free to reach out. I am happy to help. Sorry for the late reply as well, I am just not that active on here anymore and SDN stopped sending me emails for some reason.