Maximum single-digit addition sums solved by a kid
The record for solving the maximum number of single-digit addition sums was set by Vivaan N. (born on July 28, 2019) of Dakshina Kannada, Karnataka. He mentally calculated and orally answered 57 single-digit addition sums in 2 minutes and 32 seconds (without using pencil and paper), at the age of 4 years, 2 months and 22 days, as confirmed on October 19, 2023.