การดู
2:09
Scoring 91 on Arithmetic Zetamac (Speed Math)
2:12
Zetamac Arithmetic World Record - 185 Problems in 2 Minutes
2:44
128 Arithmetic Problems in 120 Seconds (Zetamac)
0:53
Andrew Tang plays 61 moves in 7.5 seconds #1 Ultrabullet player
0:33
Zetamac 2nd Grade Champ
2:04
zetamac mental math pb
2:05
Zetamac Arithmetic Game Record: 176
0:39
don't challenge an ultrabullet player to 2D aim
