One of the main challenges with the QR and DM subtests is timing. Learning a few basic mental maths tricks will save you a ton of time. In this article, we share YouTube videos that provide helpful mental maths tricks for common calculations in the exam. 1. Fast Mental Multiplication Trick 2. Mental Maths Trick For Calculating Fractions 3. Mental Maths Trick for Calculating Percentages 4. Mental Maths trick for Square roots 5. How To Square Number In Your Head For more check out the Tecmath’s YouTube channel. Not sure where to begin UCAT preparation? Take the FREE 30-day UCAT study challenge or read more UCAT articles.