The record for mentally solving the maximum number of double-digit addition and subtraction sums was set by Rivanshi (born on April 2, 2018) of Sangrur, Punjab. She solved 70 double-digit addition and subtraction sums mentally in 3 minutes and 45 seconds, at the age of 8 years, 2 months and 28 days, as confirmed on June 30, 2026.
