Maximum Single Digit Mental Arithmetic Addition Problems (3 Rows) Solved in 3 Minutes by an Individual (Male)

Maximum Two Digit Mental Arithmetic Addition and Subtraction Problems (2 Rows) Solved in 3 Minutes by an Individual (Male)

Maximum Single Digit Mental Arithmetic Addition Problems (3 Rows) Solved in 12 Minutes by an Individual (Female)

Maximum Single Digit Mental Arithmetic Addition Problems (3 Rows) Solved in 12 Minutes by an Individual (Male)

Maximum Single Digit Mental Arithmetic Addition Problems (3 Rows) Solved in 4 Minutes while Skipping Simultaneously by an Individual (Male)

Maximum Two Digit Addition Problems (2 Rows) Solved in 12 Minutes using Abacus by an Individual (Female)