The record for mentally solving the maximum number of addition and subtraction sums with multiple terms in one minute was set by Riyanshi Pal (born on June 27, 2018) of Bankura, West Bengal. She mentally solved and orally answered 20 single-digit and double-digit addition and subtraction sums (consisting of 4 to 6 multiple terms) in one minute, using the Abacus speed calculation technique, at the age of 7 years, 9 months and 21 days, as confirmed on April 17, 2026.
