This is to certify that
Abundant Arithmetic Mental Calculation Progression Abacus Centre
Chennai, Tamil Nadu, India Has successfully organized and executed a Group World Record attempt for the Maximum Number of Students Simultaneously Demonstrating Multi-Level Addition Calculation Skills Across Different age group. A Students below 8 years will solve 100 two-digit addition sums within 15 minutes, while students aged above 8 to 12 years will solve addition sums involving 1-digit, 2-digit, 3-digit, 4-digit, and 5-digit numbers. The team collectively and successfully completed the record attempt with 80 and above participants. This remarkable achievement was accomplished on 30-08-2026 at Abundant Arithmetic Mental Calculation Progression Abacus Centre. and has been officially verified and recognized and registered by Kalam’s World Records.