Speed Flash Anzan World Record (2 digits, 0.5 sec., 325 number)

Mental Multiplication (5 digits) World Record

Speed Flash Anzan World Record (2 digits, 0.3 sec., 100 number)

Speed Flash Anzan World Record (2 digits, 0.3 sec., 100 number)

Mental Multiplication (5 digits) World Record

Mental Multiplication (5 digits) World Record

Speed Flash Anzan World Record (2 digits, 0.5 sec., 325 number)

Mental Multiplication (5 digits) World Record

Speed Flash Anzan World Record (2 digits, 0.5 sec., 325 number)

Speed Flash Anzan World Record (2 digits, 0.3 sec., 100 number)

Speed Flash Anzan World Record (2 digits, 0.5 sec., 325 number)

Speed Flash Anzan World Record (2 digits, 0.5 sec., 325 number)