Mental mathematics

Mental mathematics
Date of record: 28/10/2020


Pepe King performed Mental mathematical calculations using a memoriad simulator for 20 x 20 multiplications and for ten 3 x 3 multiplications.

Pepe accurately performed a 20 x 20 multiplication in a time of 5 minutes and 26 seconds.

Pepe accurately performed a ten 3 x 3 multiplications in a time of 1 minute and

24 seconds.

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