Matching Pairs NumbersOnline version The following game is to identify people's attention and learning about numbers by CARLOS ALBERTO AVILES CASTANEDA 1 13 2 526 3 254 4 25 5 11 6 12 7 821 8 528 9 20 10 29 Twenty five Twenty Twenty nine Thirteen Twelve Two hundred and fifty four Eleven Five hundred and twenty - eight Five hundred and twenty - six Eight hundred and twenty - one