Spring 2021 Calculation Challenge (Division)

Students who are training in mental calculation often ask me how it’s possible to perform accurate divisions by long numbers, such as: 450 ÷ 34.1826 My preferred method is cross-division, which involves repeated division by a 2-digit number (in this case, by 34) followed by some simple subtractions. The method is fairly straightforward (after some practice), … Read more

Verbal Mental Math

When studying mental math in the classroom, or training for mental calculation competitions, the focus is usually on writing the answers to written questions. But in everyday life we encounter situations where the numbers to calculate are spoken to us, or generated in our head—this is verbal mental math or verbal mental arithmetic. Typical Situations Requiring … Read more

Top 10 Tips when Competing in Mental Calculation

After any training is over, actually performing in a calculation competition is an opportunity for participants to demonstrate their new skills. For all future mind sports competitors – here are my top 10 tips for preparing for an enjoyable and successful experience! #1: Three nights of good sleep The brain works best when it is … Read more

Fastest Possible Processing Speed of the Human Brain

In 2009, when Usain Bolt smashed the world record in the 100 metres sprint in 9.58 seconds, the world wondered what was the fastest possible speed that anyone could run. Could anyone run 100 metres in 9.5 seconds? 9.0 seconds? 2.0 seconds? Just as an athlete pushes their body to its limits, a competitive mental … Read more

Tracking Training Performance in Mental Calculation

Anyone serious about improving a skill can benefit from keeping a note of their performance in training. For example, a competitive footballer could record their running speed in fitness training, their accuracy when practising free kicks, and some notes about their strategy and position during each match. A professional dancer may video some of their … Read more

Spaced Repetition for Memorizing Data

At all levels of Mental Calculation (especially elite levels) you can gain speed and accuracy by learning more shortcuts. For example: At school we learn our times tables from 2×2 until 12×12 For quickly calculating square roots it is helpful to know the square numbers from 31² = 961 until 99² = 9801 For calculating … Read more

Optimizing Working Memory for Mental Calculation

For many mental tasks, the brain needs to store small amounts of information for a short period of time. For example when listening to someone speak, you remember the exact sound of the last few seconds. When giving directions around your city, your mind may generate crude images of the locations or a map. These … Read more